[BUGFIX] ObjectMetadata item server validation (#10699)

# Introduction
This PR contains several SNAPSHOT files explaining big +

While refactoring the Object Model settings page in
https://github.com/twentyhq/twenty/pull/10653, encountered a critical
issue when submitting either one or both names with `""` empty string
hard corrupting a workspace.

This motivate this PR reviewing server side validation

I feel like we could share zod schema between front and back

## Refactored server validation
What to expect from Names:
- Plural and singular have to be different ( case insensitive and
trimmed check )
- Contains only a-z A-Z and 0-9
- Follows camelCase
- Is not empty => Is not too short ( 1 )
- Is not too long ( 63 )
- Is case insensitive( fooBar and fOoBar now rejected )

What to expect from Labels:
- Plural and singular have to be different ( case insensitive and
trimmed check )
- Is not empty => Is not too short ( 1 )
- Is not too long ( 63 )
- Is case insensitive ( fooBar and fOoBar now rejected )

close https://github.com/twentyhq/twenty/issues/10694

## Creation integrations tests
Created new integrations tests, following
[EachTesting](https://jestjs.io/docs/api#testeachtablename-fn-timeout)
pattern and uses snapshot to assert errors message. These tests cover
several failing use cases and started to implement ones for the happy
path but object metadata item deletion is currently broken unless I'm
mistaken @Weiko is on it

## Notes
- [ ] As we've added new validation rules towards names and labels we
should scan db in order to standardize existing values using either a
migration command or manual check
- [ ] Will review in an other PR the update path, adding integrations
tests and so on

packages/twenty-server/src/engine/metadata-modules/utils/exceptions/invalid-metadata-name.exception.ts

@@ -0,0 +1,5 @@
+export class InvalidMetadataNameException extends Error {
+  constructor(message: string) {
+    super(message);
+  }
+}

packages/twenty-server/src/engine/metadata-modules/utils/exceptions/invalid-string.exception.ts

@@ -1,7 +0,0 @@
-export class InvalidStringException extends Error {
-  constructor(string: string) {
-    const message = `String "${string}" is not valid`;
-
-    super(message);
-  }
-}

packages/twenty-server/src/engine/metadata-modules/utils/exceptions/name-not-available.exception.ts

@@ -1,7 +0,0 @@
-export class NameNotAvailableException extends Error {
-  constructor(name: string) {
-    const message = `Name "${name}" is not available`;
-
-    super(message);
-  }
-}

packages/twenty-server/src/engine/metadata-modules/utils/exceptions/name-too-long.exception.ts

@@ -1,7 +0,0 @@
-export class NameTooLongException extends Error {
-  constructor(string: string) {
-    const message = `String "${string}" exceeds 63 characters limit`;
-
-    super(message);
-  }
-}