ci: add workflow to publish to CocoaPods (#74)

* Add workflow to publish to CocoaPods

* Add setup-ruby action

* Test without any push filter

* Add ruby version

* Re-add push filter for tags only

* Uncomment deploy step

.github/workflows/publish-to-cocoapods.yml

@@ -0,0 +1,27 @@
+name: Publish SDK to CocoaPods
+
+on:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  publish:
+    runs-on: macOS-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: '3.3'
+
+      - name: Install Cocoapods
+        run: gem install cocoapods
+
+      - name: Deploy to Cocoapods
+        run: |
+          set -eo pipefail
+          pod lib lint --allow-warnings
+          pod trunk push --allow-warnings
+        env:
+          COCOAPODS_TRUNK_TOKEN: ${{ secrets.COCOAPODS_TRUNK_TOKEN }}