6181 workflows create a custom code executor (#6235)

Closes #6181

## Testing
- download Altair graphql dev tool https://altairgraphql.dev/#download
- create a file locally `test.ts` containing:
```
export const handler = async (event: object, context: object) => {
  return { test: 'toto', data: event['data'] };
}
```
- play those requests in Altair:
mutation UpsertFunction($file: Upload!) {
  upsertFunction(name: "toto", file: $file)
}

mutation ExecFunction {
  executeFunction(name:"toto", payload: {data: "titi"})
}
- it will run the local driver, add those env variable to test with
lambda driver
```
CUSTOM_CODE_ENGINE_DRIVER_TYPE=lambda
LAMBDA_REGION=eu-west-2
LAMBDA_ROLE=<ASK_ME>
```

packages/twenty-server/src/engine/integrations/serverless/serverless.service.ts

@@ -0,0 +1,22 @@
+import { Inject, Injectable } from '@nestjs/common';
+
+import { ServerlessDriver } from 'src/engine/integrations/serverless/drivers/interfaces/serverless-driver.interface';
+
+import { SERVERLESS_DRIVER } from 'src/engine/integrations/serverless/serverless.constants';
+import { ServerlessFunctionEntity } from 'src/engine/metadata-modules/serverless-function/serverless-function.entity';
+
+@Injectable()
+export class ServerlessService implements ServerlessDriver {
+  constructor(@Inject(SERVERLESS_DRIVER) private driver: ServerlessDriver) {}
+
+  async build(serverlessFunction: ServerlessFunctionEntity): Promise<void> {
+    return this.driver.build(serverlessFunction);
+  }
+
+  async execute(
+    serverlessFunction: ServerlessFunctionEntity,
+    payload: object | undefined = undefined,
+  ) {
+    return this.driver.execute(serverlessFunction, payload);
+  }
+}