Add grant access

Author: hamsadev

.github/workflows/grant-access.yml

@@ -0,0 +1,29 @@
+name: Grant Access to Private Repo
+
+on:
+  workflow_dispatch:
+    inputs:
+      username:
+        description: 'GitHub Username'
+        required: true
+
+jobs:
+  check_star_and_grant_access:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check if user has starred the repo
+        id: check_star
+        run: |
+          curl -s https://api.github.com/repos/hamsadev/EmbeddedC-Tutorials-and-Challenges/stargazers | grep ${{ github.event.inputs.username }} || exit 1
+
+      - name: Add user to private repo
+        if: success()
+        run: |
+          curl -X PUT -H "Authorization: token ${{ secrets.GH_TOKEN }}" \
+          -H "Accept: application/vnd.github.v3+json" \
+          https://api.github.com/repos/hamsadev/EmbeddedC-Solutions/collaborators/${{ github.event.inputs.username }} \
+          -d '{"permission":"pull"}'
+
+      - name: Send confirmation
+        if: success()
+        run: echo "Access granted to private repository for user ${{ github.event.inputs.username }}."