Add workflow runner (#6458)

- add workflow runner module
- add an endpoint to trigger a workflow via api
- improve error handling for serverless functions

## Testing
- create 2 serverless functions
- create a workflow
- create this workflow Version
```
{
  "type": "MANUAL",
  "input": {"b": "bb"},
  "nextAction": {
    "name": "step_1",
    "displayName": "Code",
    "type": "CODE",
    "valid": true,
    "settings": {
      "serverlessFunctionId": "Serverless function 1 Id",
      "errorHandlingOptions": {
        "retryOnFailure": {
          "value": false
        },
        "continueOnFailure": {
          "value": false
        }
      }
    },
    "nextAction": {
      "name": "step_1",
      "displayName": "Code",
      "type": "CODE",
      "valid": true,
      "settings": {
        "serverlessFunctionId": "Serverless function 1 Id",
        "errorHandlingOptions": {
          "retryOnFailure": {
            "value": false
          },
          "continueOnFailure": {
            "value": false
          }
        }
      },
      "nextAction": {
        "name": "step_1",
        "displayName": "Code",
        "type": "CODE",
        "valid": true,
        "settings": {
          "serverlessFunctionId": "Serverless function 2 Id",
          "errorHandlingOptions": {
            "retryOnFailure": {
              "value": false
            },
            "continueOnFailure": {
              "value": false
            }
          }
        }
      }
    }
  }
}

`
``
- call 
```
mutation Trigger {
  triggerWorkflow(workflowVersionId: "WORKFLOW_VERSION_ID") {
    result
  }
}
```
- try when errors are injected in serverless function

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

@@ -1,6 +1,9 @@
 import { Inject, Injectable } from '@nestjs/common';
 
-import { ServerlessDriver } from 'src/engine/integrations/serverless/drivers/interfaces/serverless-driver.interface';
+import {
+  ServerlessDriver,
+  ServerlessExecuteResult,
+} 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';
@@ -20,7 +23,7 @@ export class ServerlessService implements ServerlessDriver {
   async execute(
     serverlessFunction: ServerlessFunctionEntity,
     payload: object | undefined = undefined,
-  ) {
+  ): Promise<ServerlessExecuteResult> {
     return this.driver.execute(serverlessFunction, payload);
   }
 }