Add cla

.github/workflows/cla.yml

@@ -0,0 +1,22 @@
+name: "MindsDB CLA Assistant"
+on:
+  issue_comment:
+    types: [created]
+  pull_request_target:
+    types: [opened,closed,synchronize]    
+jobs:
+  CLAssistant:
+    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@v2.6.1
+        env: 
+          GITHUB_TOKEN: ${{ secrets.CLA_TOKEN }}          
+          PERSONAL_ACCESS_TOKEN : ${{ secrets.CLA_TOKEN }}
+        with: 
+          path-to-signatures: 'assets/contributions-agreement/cla.json'
+          # Add path to the CLA here
+          path-to-document: 'https://github.com/mindsdb/mindsdb/blob/main/assets/contributions-agreement/individual-contributor.md'
+          branch: 'cla'
+          allowlist: bot*, ZoranPandovski, torrmal, Stpmax, mindsdbadmin, ea-rus, tmichaeldb, dusvyat, hamishfagg, MinuraPunchihewa, martyna-mindsdb, lucas-koontz