Fix AI demo workspace skill (#18575)

This PR fixes what allows to have a working demo workspace skill.

- Skill updated many times into something that works
- Fixed infinite loop in AI chat by memoizing ai-sdk output
- Finished navigateToView implementation
- Increased MAX_STEPS to 300 so the chat don't quit in the middle of a
long running skill
- Added CreateManyRelationFields

packages/twenty-shared/src/ai/types/NavigateAppToolOutput.ts

@@ -5,7 +5,9 @@ export type NavigateAppToolOutput =
     }
   | {
       action: 'navigateToView';
+      viewId: string;
       viewName: string;
+      objectNameSingular: string;
     }
   | {
       action: 'navigateToRecord';