Migrate REUSE to TOML

[AndyScherzinger]

☑️ Resolves

• update to latest format

🖼️ Screenshots

🏚️ Before	🏡 After
B	A

🚧 Tasks

• merge and forward-port

🏁 Checklist

• ⛑️ Tests are included or are not applicable
• 📘 Component documentation has been extended, updated or is not applicable
• 3️⃣ Backport to next requested with a Vue 3 upgrade

[AndyScherzinger]

/backport to next

[backportbot]

The backport to next failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout next
git pull origin next

# Create the new backport branch
git checkout -b backport/5791/next

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 9612dfe5 0922baa9

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/5791/next

Error: Failed to push branch backport/5791/next: To https://github.com/nextcloud-libraries/nextcloud-vue.git
! [remote rejected] backport/5791/next -> backport/5791/next (refusing to allow a GitHub App to create or update workflow .github/workflows/reuse.yml without workflows permission)
error: failed to push some refs to 'https://github.com/nextcloud-libraries/nextcloud-vue.git'

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Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.