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/metadata-modules/serverless-function/dtos/serverless-function-execution-result.dto.ts

@@ -1,13 +1,44 @@
-import { Field, ObjectType } from '@nestjs/graphql';
+import { Field, ObjectType, registerEnumType } from '@nestjs/graphql';
 
-import { IsObject } from 'class-validator';
+import { IsObject, IsOptional } from 'class-validator';
 import graphqlTypeJson from 'graphql-type-json';
 
+export enum ServerlessFunctionExecutionStatus {
+  SUCCESS = 'SUCCESS',
+  ERROR = 'ERROR',
+}
+
+registerEnumType(ServerlessFunctionExecutionStatus, {
+  name: 'ServerlessFunctionExecutionStatus',
+  description: 'Status of the serverless function execution',
+});
+
 @ObjectType('ServerlessFunctionExecutionResult')
-export class ServerlessFunctionExecutionResultDto {
+export class ServerlessFunctionExecutionResultDTO {
   @IsObject()
   @Field(() => graphqlTypeJson, {
     description: 'Execution result in JSON format',
+    nullable: true,
   })
-  result: JSON;
+  data?: JSON;
+
+  @Field({ description: 'Execution duration in milliseconds' })
+  duration: number;
+
+  @Field(() => ServerlessFunctionExecutionStatus, {
+    description: 'Execution status',
+  })
+  status: ServerlessFunctionExecutionStatus;
+
+  @IsObject()
+  @IsOptional()
+  @Field(() => graphqlTypeJson, {
+    description: 'Execution error in JSON format',
+    nullable: true,
+  })
+  error?: {
+    errorType: string;
+    errorMessage: string;
+    stackTrace: string;
+  };
 }

packages/twenty-server/src/engine/metadata-modules/serverless-function/dtos/serverless-function.dto.ts

@@ -36,7 +36,7 @@ registerEnumType(ServerlessFunctionSyncStatus, {
   defaultResultSize: 10,
   maxResultsSize: 1000,
 })
-export class ServerlessFunctionDto {
+export class ServerlessFunctionDTO {
   @IsUUID()
   @IsNotEmpty()
   @IDField(() => UUIDScalarType)