1751 extensibility twenty sdk v2 use twenty sdk to define a serverless function trigger (#15347)

This PR adds 2 columns handlerPath and handlerName in serverlessFunction
to locate the entrypoint of a serverless in a codebase

It adds the following decorators in twenty-sdk:
- ServerlessFunction
- DatabaseEventTrigger
- RouteTrigger
- CronTrigger
- ApplicationVariable

It still supports deprecated entity.manifest.jsonc 

Overall code needs to be cleaned a little bit, but it should work
properly so you can try to test if the DEVX fits your needs

See updates in hello-world application

```typescript
import axios from 'axios';
import {
  DatabaseEventTrigger,
  ServerlessFunction,
  RouteTrigger,
  CronTrigger,
  ApplicationVariable,
} from 'twenty-sdk';

@ApplicationVariable({
  universalIdentifier: 'dedc53eb-9c12-4fe2-ba86-4a2add19d305',
  key: 'TWENTY_API_KEY',
  description: 'Twenty API Key',
  isSecret: true,
})
@DatabaseEventTrigger({
  universalIdentifier: '203f1df3-4a82-4d06-a001-b8cf22a31156',
  eventName: 'person.created',
})
@RouteTrigger({
  universalIdentifier: 'c9f84c8d-b26d-40d1-95dd-4f834ae5a2c6',
  path: '/post-card/create',
  httpMethod: 'GET',
  isAuthRequired: false,
})
@CronTrigger({
  universalIdentifier: 'dd802808-0695-49e1-98c9-d5c9e2704ce2',
  pattern: '0 0 1 1 *', // Every year 1st of January
})
@ServerlessFunction({
  universalIdentifier: 'e56d363b-0bdc-4d8a-a393-6f0d1c75bdcf',
})
class CreateNewPostCard {
  main = async (params: { recipient: string }): Promise<string> => {
    const { recipient } = params;

    const options = {
      method: 'POST',
      url: 'http://localhost:3000/rest/postCards',
      headers: {
        'Content-Type': 'application/json',
        Authorization: `Bearer ${process.env.TWENTY_API_KEY}`,
      },
      data: { name: recipient ?? 'Unknown' },
    };

    try {
      const { data } = await axios.request(options);

      console.log(`New post card to "${recipient}" created`);

      return data;
    } catch (error) {
      console.error(error);
      throw error;
    }
  };
}

export const createNewPostCardHandler = new CreateNewPostCard().main;

```


### [edit] V2 

After the v1 proposal, I see that using a class method to define the
serverless function handler is pretty confusing. Lets leave
serverlessFunction configuration decorators on the class, but move the
handler like before. Here is the v2 hello-world serverless function:

```typescript
import axios from 'axios';
import {
  DatabaseEventTrigger,
  ServerlessFunction,
  RouteTrigger,
  CronTrigger,
  ApplicationVariable,
} from 'twenty-sdk';

@ApplicationVariable({
  universalIdentifier: 'dedc53eb-9c12-4fe2-ba86-4a2add19d305',
  key: 'TWENTY_API_KEY',
  description: 'Twenty API Key',
  isSecret: true,
})
@DatabaseEventTrigger({
  universalIdentifier: '203f1df3-4a82-4d06-a001-b8cf22a31156',
  eventName: 'person.created',
})
@RouteTrigger({
  universalIdentifier: 'c9f84c8d-b26d-40d1-95dd-4f834ae5a2c6',
  path: '/post-card/create',
  httpMethod: 'GET',
  isAuthRequired: false,
})
@CronTrigger({
  universalIdentifier: 'dd802808-0695-49e1-98c9-d5c9e2704ce2',
  pattern: '0 0 1 1 *', // Every year 1st of January
})
@ServerlessFunction({
  universalIdentifier: 'e56d363b-0bdc-4d8a-a393-6f0d1c75bdcf',
})
export class ServerlessFunctionDefinition {}

export const main = async (params: { recipient: string }): Promise<string> => {
  const { recipient } = params;

  const options = {
    method: 'POST',
    url: 'http://localhost:3000/rest/postCards',
    headers: {
      'Content-Type': 'application/json',
      Authorization: `Bearer ${process.env.TWENTY_API_KEY}`,
    },
    data: { name: recipient ?? 'Unknown' },
  };

  try {
    const { data } = await axios.request(options);

    console.log(`New post card to "${recipient}" created`);

    return data;
  } catch (error) {
    console.error(error);
    throw error;
  }
};

```


### [edit] V3

After the v2 proposal, we don't really like decorators on empty classes.
We decided to go with a Vercel approach with a config constant

```typescript
import axios from 'axios';
import { ServerlessFunctionConfig } from 'twenty-sdk';

export const main = async (params: { recipient: string }): Promise<string> => {
  const { recipient } = params;

  const options = {
    method: 'POST',
    url: 'http://localhost:3000/rest/postCards',
    headers: {
      'Content-Type': 'application/json',
      Authorization: `Bearer ${process.env.TWENTY_API_KEY}`,
    },
    data: { name: recipient ?? 'Unknown' },
  };

  try {
    const { data } = await axios.request(options);

    console.log(`New post card to "${recipient}" created`);

    return data;
  } catch (error) {
    console.error(error);
    throw error;
  }
};

export const config: ServerlessFunctionConfig = {
  universalIdentifier: 'e56d363b-0bdc-4d8a-a393-6f0d1c75bdcf',
  routeTriggers: [
  {
    universalIdentifier: 'c9f84c8d-b26d-40d1-95dd-4f834ae5a2c6',
    path: '/post-card/create',
    httpMethod: 'GET',
    isAuthRequired: false,
  }
  ],
  cronTriggers: [
    {
      universalIdentifier: 'dd802808-0695-49e1-98c9-d5c9e2704ce2',
      pattern: '0 0 1 1 *', // Every year 1st of January
    }
  ],
  databaseEventTriggers: [
  {
    universalIdentifier: '203f1df3-4a82-4d06-a001-b8cf22a31156',
    eventName: 'person.created',
   }
  ]
}

```

yarn.lock

@@ -52510,7 +52510,9 @@ __metadata:
     lodash.capitalize: "npm:^4.2.1"
     lodash.kebabcase: "npm:^4.1.1"
     tsx: "npm:^4.7.0"
+    twenty-sdk: "workspace:*"
     typescript: "npm:^5.9.2"
+    uuid: "npm:^13.0.0"
     wait-on: "npm:^7.2.0"
   bin:
     twenty: dist/cli.js
@@ -52663,7 +52665,7 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"twenty-sdk@workspace:packages/twenty-sdk":
+"twenty-sdk@workspace:*, twenty-sdk@workspace:packages/twenty-sdk":
   version: 0.0.0-use.local
   resolution: "twenty-sdk@workspace:packages/twenty-sdk"
   dependencies:
@@ -54392,6 +54394,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"uuid@npm:^13.0.0":
+  version: 13.0.0
+  resolution: "uuid@npm:13.0.0"
+  bin:
+    uuid: dist-node/bin/uuid
+  checksum: 10c0/950e4c18d57fef6c69675344f5700a08af21e26b9eff2bf2180427564297368c538ea11ac9fb2e6528b17fc3966a9fd2c5049361b0b63c7d654f3c550c9b3d67
+  languageName: node
+  linkType: hard
+
 "uuid@npm:^3.3.2":
   version: 3.4.0
   resolution: "uuid@npm:3.4.0"