[Apps] Apps marketplace (first draft) (#17562)

https://github.com/user-attachments/assets/c4e63edb-6e98-44bc-841f-ee110ae712d4

How it works
- `manifest.json` files are now committed when apps are published to our
repo
- to display available apps, from the server, we read into our github
repo, using a pod-scoped cache
- feature flagged
- app installation will be behind permission gate MARKETPLACE_APPS

Limitations and what is yet to develop
- content and settings tabs
- installed apps tab
- app installation
- test and potentially fix reading from .manifest.json once [Reshape
manifest
structure](https://github.com/twentyhq/core-team-issues/issues/2183) is
done. additional work is expected on assets notably. (couldnt properly
do it here as manifest.json will only be committed after this pr)
- we only read in community/ folder for now - we may want tochange that
- the cache is rather artisanal for now and scoped by pod - we may want
to change that

packages/twenty-server/src/modules/workflow/workflow-executor/services/workflow-execution-context.service.ts

@@ -3,10 +3,10 @@ import { Injectable } from '@nestjs/common';
 import { FieldActorSource } from 'twenty-shared/types';
 import { isDefined } from 'twenty-shared/utils';
 
+import { ApplicationService } from 'src/engine/core-modules/application/services/application.service';
 import { type WorkspaceAuthContext } from 'src/engine/core-modules/auth/types/workspace-auth-context.type';
 import { buildApplicationAuthContext } from 'src/engine/core-modules/auth/utils/build-application-auth-context.util';
 import { buildUserAuthContext } from 'src/engine/core-modules/auth/utils/build-user-auth-context.util';
-import { ApplicationService } from 'src/engine/core-modules/application/application.service';
 import { UserWorkspaceService } from 'src/engine/core-modules/user-workspace/user-workspace.service';
 import { ADMIN_ROLE } from 'src/engine/metadata-modules/role/constants/admin-role';
 import { RoleService } from 'src/engine/metadata-modules/role/role.service';