feat(app): allow non-admin developers to claim and list marketplace apps (#22621)

## Context

Follow-up to #22609. Lets a non-admin developer claim ownership of a
public Twenty app they published to npm, then request a marketplace
listing that a server admin reviews. Marketplace state is per-instance
for now.

## Claiming

- Developer tab gets a **Claim an application** section: look up an
unclaimed npm app by package name or universal identifier.
- Ownership is proven with GitHub OAuth against the package's npm
provenance (trusted publishing): the connected account must own the
GitHub account or organization the package was published from.
- Errors from the GitHub callback come back as a code and are shown
inline with a link to the relevant documentation.
- The old one-click claim stays admin-only.
- A **Sync catalog** button triggers a catalog refresh instead of
waiting for the hourly cron.
- Gated behind the `IS_APP_CLAIMING_ENABLED` feature flag.

## Listing requests

- Catalog-synced apps are created **unlisted**; a data migration unlists
previously auto-listed unclaimed npm apps (owned or vetted rows are left
untouched).
- Owners request a listing from the Distribution tab (logo + description
required); a server admin approves or rejects it from a **Listing
requests** section in the Admin Panel.

## Screenshots

<img width="1512" height="829" alt="image"
src="https://github.com/user-attachments/assets/788d4362-97c4-4e42-810c-ef1f11517bec"/>
<img width="1512" height="829" alt="image"
src="https://github.com/user-attachments/assets/d6246190-c82a-4f64-87be-3bb668527645"/>
<img width="1512" height="828" alt="image"
src="https://github.com/user-attachments/assets/21a8dad4-610b-4d1f-8948-b9acab40d373"/>
<img width="1512" height="829" alt="image"
src="https://github.com/user-attachments/assets/58246130-41f7-451e-ae7f-57bd21d04bb6"/>

---------

Co-authored-by: cubic-dev-ai[bot] <191113872+cubic-dev-ai[bot]@users.noreply.github.com>

packages/twenty-docs/developers/extend/apps/getting-started/project-structure.mdx

@@ -27,6 +27,7 @@ my-twenty-app/
   .github/workflows/
     ci.yml                                  # Lint, typecheck, unit + integration tests
     cd.yml                                  # Deploy + install on push to main
+    publish.yml                             # Publish to npm on version tags (with provenance)
   public/
     logo.svg                                # Static assets
   vitest.config.ts                          # Integration test runner config