Add deploy to CocoaPods action.

Author: jverkoey

.github/workflows/deploy_to_cocoapods.yaml

@@ -0,0 +1,17 @@
+name: deploy_to_cocoapods
+
+on:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  build:
+    runs-on: macOS-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: Install Cocoapods
+      run: gem install cocoapods
+    - uses: michaelhenry/[email protected]
+      env:
+        COCOAPODS_TRUNK_TOKEN: ${{ secrets.COCOAPODS_TRUNK_TOKEN }}