Add App Tables

[seriAlizations]

Summary

TODO

• Merge Add App Tables ncw-config#37

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

[Copilot]

Pull Request Overview

This PR adds the Nextcloud Tables app as a submodule to the project and configures the build system to include it in the build process.

• Adds the tables app as a Git submodule pointing to the official nextcloud/tables repository
• Updates the GitHub Actions workflow to build the tables app with npm and composer support
• Updates the IONOS submodule to a newer commit

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
apps-external/tables	Adds the tables app as a new submodule
.gitmodules	Registers the tables submodule configuration
.github/workflows/build-artifact.yml	Adds build configuration for the tables app
IONOS	Updates the IONOS submodule commit reference

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

Pull Request Overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated no new comments.

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

Pull Request Overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated no new comments.

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}