Encrypt/decrypt app secret variables (#17394)

Closes https://github.com/twentyhq/core-team-issues/issues/1724
From PR https://github.com/twentyhq/twenty/pull/15283, followed same
implementation
- Introduce EnvironmentModule to provide type safety for env-only
variables
- Encrypt secret variables
- When querying app secret variable, display up to first 5 characters
(depending on secret length) then `******`

packages/twenty-server/src/app.module.ts

@@ -4,7 +4,6 @@ import {
   Module,
   RequestMethod,
 } from '@nestjs/common';
-import { ConfigModule } from '@nestjs/config';
 import { GraphQLModule } from '@nestjs/graphql';
 import { ServeStaticModule } from '@nestjs/serve-static';
 
@@ -48,10 +47,6 @@ const MIGRATED_REST_METHODS = [
 @Module({
   imports: [
     SentryModule.forRoot(),
-    ConfigModule.forRoot({
-      isGlobal: true,
-      envFilePath: process.env.NODE_ENV === 'test' ? '.env.test' : '.env',
-    }),
     GraphQLModule.forRootAsync<YogaDriverConfig>({
       driver: YogaDriver,
       imports: [GraphQLConfigModule, MetricsModule, DataloaderModule],