Add `status-software-legal-documents` as a Git Submodule in `status-mobile`

[Samyoul]

• Objective:
  Add the status-software-legal-documents repository as a Git submodule in the status-mobile repository to enable synchronisation of legal documents.

• Tasks:

  1. Navigate to the status-mobile repository:

     cd status-mobile

  2. Add the status-software-legal-documents repository as a submodule:

     git submodule add https://github.com/status-im/status-software-legal-documents.git path/to/legal-docs

  3. Initialise and update the submodule:

     git submodule update --init

  4. Commit and push the changes:

     git commit -am "Add legal documents submodule"
     git push origin <branch>

  5. Verify the submodule integration:
     • Check that the submodule directory contains the expected files.
     • Confirm that git diff --no-index can compare local legal files with submodule files.

• Acceptance Criteria:

  • The status-software-legal-documents submodule is added and visible in the repository.
  • Local legal documents can be compared with the submodule files.