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-front/src/modules/workflow/utils/getStepDefaultDefinition.ts

@@ -18,6 +18,7 @@ export const getStepDefaultDefinition = (
           input: {
             serverlessFunctionId: '',
             serverlessFunctionVersion: '',
+            serverlessFunctionInput: {},
           },
           outputSchema: {},
           errorHandlingOptions: {