Add github action workflows for Android and iOS (#104)

This change adds benign workflows for Android and iOS builds.

Author: DellaBitta

.github/workflows/android.yml

@@ -0,0 +1,14 @@
+name: Android builds
+
+on:
+  workflow_dispatch:
+    inputs:
+      apis:
+        description: 'CSV of apis whose quickstart examples we should build'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: noop
+        run: true

.github/workflows/ios.yml

@@ -0,0 +1,14 @@
+name: iOS builds
+
+on:
+  workflow_dispatch:
+    inputs:
+      apis:
+        description: 'CSV of apis whose quickstart examples we should build'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: noop
+        run: true