do the sha generation on master

.github/workflows/sha.yml

@@ -0,0 +1,34 @@
+name: SHA 
+
+# Run this workflow ever time code is pushed to a branch
+# other than `main` in your repository
+on: push
+
+jobs:
+  # Set the job key. The key is displayed as the job name
+  # when a job name is not provided
+  sha:
+    # Name the Job
+    name: Commit SHA 
+    # Set the type of machine to run on
+    runs-on: ubuntu-latest
+
+    if: contains(github.ref, "master")
+    steps:
+      # Checks out a copy of your repository on the ubuntu-latest machine
+      - name: Checkout code
+        uses: actions/checkout@v2
+      
+      - name: Create SHA File
+        run: |
+          sha=$(git rev-parse --short "$GITHUB_SHA")
+          echo "#define GITHUB_SHA \"$sha\"" > GITHUB_SHA.h
+
+      - uses: EndBug/add-and-commit@v4 # You can change this to use a specific version
+        with:
+          add: 'GITHUB_SHA.h'
+          message: 'Committing a SHA'
+
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # Leave this line unchanged
+