Activity as standard object (#6219)

In this PR I layout the first steps to migrate Activity to a traditional
Standard objects

Since this is a big transition, I'd rather split it into several
deployments / PRs

<img width="1512" alt="image"
src="https://github.com/user-attachments/assets/012e2bbf-9d1b-4723-aaf6-269ef588b050">

---------

Co-authored-by: Charles Bochet <charles@twenty.com>
Co-authored-by: bosiraphael <71827178+bosiraphael@users.noreply.github.com>
Co-authored-by: Weiko <corentin@twenty.com>
Co-authored-by: Faisal-imtiyaz123 <142205282+Faisal-imtiyaz123@users.noreply.github.com>
Co-authored-by: Prateek Jain <prateekj1171998@gmail.com>

packages/twenty-front/src/modules/activities/states/activityIdInDrawerState.ts

@@ -1,6 +0,0 @@
-import { createState } from 'twenty-ui';
-
-export const activityIdInDrawerState = createState<string | null>({
-  key: 'activityIdInDrawerState',
-  defaultValue: null,
-});

packages/twenty-front/src/modules/activities/states/recoil-scope-contexts/TasksRecoilScopeContext.ts

@@ -1,3 +0,0 @@
-import { createContext } from 'react';
-
-export const TasksRecoilScopeContext = createContext<string | null>(null);

packages/twenty-front/src/modules/activities/states/temporaryActivityForEditorState.ts

@@ -1,9 +0,0 @@
-import { createState } from 'twenty-ui';
-
-import { ActivityForEditor } from '@/activities/types/ActivityForEditor';
-
-export const temporaryActivityForEditorState =
-  createState<ActivityForEditor | null>({
-    key: 'temporaryActivityForEditorState',
-    defaultValue: null,
-  });