Improve Allowlisting

- Make it create a new PR per pool so that it doesn't force update the
  same PR when new pools come in
- Add pool description to the allowlist request header.

.github/workflows/allowlist.yml

@@ -42,10 +42,10 @@ jobs:
           committer: GitHub <[email protected]>
           author: ${{ github.actor }} <${{ github.actor }}@users.noreply.github.com>
           signoff: false
-          branch: update-allowlist
+          branch: update-allowlist-${{inputs.network}}-${{inputs.poolId}}
           base: master
           delete-branch: true
-          title: 'Update pool allowlist'
+          title: 'Allowlist ${{inputs.poolDescription}} pool'
           body: |
             This PR was autogenerated by the allowlist manual Github action.
           draft: false