Infer function input in workflow step (#8308)

- add `inputSchema` column in serverless function. This is an array of
parameters, with their name and type
- on serverless function id update, get the `inputSchema` + store empty
settings in step
- from step settings, build the form 

TODO in next PR:
- use field type to decide what kind of form should be printed
- have a strategy to handle object as input



https://github.com/user-attachments/assets/ed96f919-24b5-4baf-a051-31f76f45e575

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

@@ -0,0 +1,14 @@
+import { Field, ObjectType } from '@nestjs/graphql';
+
+import { IsString } from 'class-validator';
+
+@ObjectType()
+export class FunctionParameter {
+  @IsString()
+  @Field(() => String)
+  name: string;
+
+  @IsString()
+  @Field(() => String)
+  type: string;
+}

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

@@ -20,6 +20,7 @@ import {
 } from 'class-validator';
 
 import { UUIDScalarType } from 'src/engine/api/graphql/workspace-schema-builder/graphql-types/scalars';
+import { FunctionParameter } from 'src/engine/metadata-modules/serverless-function/dtos/function-parameter.dto';
 import { ServerlessFunctionSyncStatus } from 'src/engine/metadata-modules/serverless-function/serverless-function.entity';
 
 registerEnumType(ServerlessFunctionSyncStatus, {
@@ -64,6 +65,10 @@ export class ServerlessFunctionDTO {
   @Field(() => [String], { nullable: false })
   publishedVersions: string[];
 
+  @IsArray()
+  @Field(() => [FunctionParameter], { nullable: true })
+  latestVersionInputSchema: FunctionParameter[] | null;
+
   @IsEnum(ServerlessFunctionSyncStatus)
   @IsNotEmpty()
   @Field(() => ServerlessFunctionSyncStatus)