ci: implement signature assistant workflow directly

...as opposed to trying to use it as a shared workflow

Author: cwillisf

.github/workflows/signature-assistant.yml

@@ -12,7 +12,20 @@ permissions:
   statuses: write
 
 jobs:
-  signature-assistant:
-    uses: scratchfoundation/scratch-agreements/.github/workflows/assistant.yml@main
-    secrets:
-      GHA_AGREEMENTS_PAT: ${{ secrets.GHA_AGREEMENTS_PAT }}
+  CLA-Assistant:
+    runs-on: ubuntu-latest
+    steps:
+      - name: "CLA Assistant"
+        if: (github.event.comment.body == 'recheck' || github.event.comment.body == 'I have read the CLA Document and I hereby sign the CLA') || github.event_name == 'pull_request_target'
+        uses: contributor-assistant/github-action@ca4a40a7d1004f18d9960b404b97e5f30a505a08 # v2.6.1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          # the below token should have repo scope and must be manually added by you in the repository's secrets
+          PERSONAL_ACCESS_TOKEN: ${{ secrets.GHA_AGREEMENTS_PAT }}
+        with:
+          remote-organization-name: 'scratchfoundation'
+          remote-repository-name: 'scratch-agreements'
+          path-to-signatures: 'signatures/version1/cla.json'
+          path-to-document: 'https://github.com/scratchfoundation/scratch-agreements/blob/main/CLA.md'
+          branch: 'main'
+          allowlist: semantic-release-bot,*[bot]