Add usage comments to CMake Android action workflow

Added usage instructions for the CMake Android action.

Author: derselbst

.github/workflows/github_actions_cmake-android_action.yml

@@ -1,3 +1,12 @@
+# usage
+#       - name: Build via composite action steps
+#        uses: ./.github/actions/cmake-android
+#        with:
+#          sourceDir: .
+#          workDir: .
+#          cmakeArgs: ""
+#          installCommand: "make install"
+#          cache_restored: ${{ steps.cache.outputs.cache-hit }}
 name: "CMake Android (Steps)"
 description: "Android CMake build steps mirroring the Azure template"
 inputs:
@@ -82,4 +91,4 @@ runs:
         ls -la "${{ inputs.sourceDir }}/build/CMakeFiles/" || true
         cat "${{ inputs.sourceDir }}/build/CMakeFiles/CMakeError.log" || true
         cat "${{ inputs.sourceDir }}/build/CMakeFiles/CMakeOutput.log" || true
-        true
+        true