chore: Universal Linking for Android (#2324)

* android assetlinks.json config

* try renaming html to json

* update env example

* chore: fix styling

* chore: styling part 2

* test: add spec for android assetlinks

* minor fixes

* minor fixes

* remove android sha256 value from env example

* add default sh256 value

Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>
Co-authored-by: Sojan Jose <sojan@pepalo.com>

app/controllers/android_app_controller.rb

@@ -0,0 +1,5 @@
+class AndroidAppController < ApplicationController
+  def assetlinks
+    render layout: false
+  end
+end

app/views/android_app/assetlinks.json.erb

@@ -0,0 +1,12 @@
+[
+  {
+    "relation": ["delegate_permission/common.handle_all_urls"],
+    "target": {
+      "namespace": "android_app",
+      "package_name": "<%= ENV['ANDROID_BUNDLE_ID'] %>",
+      "sha256_cert_fingerprints": [
+        "<%= ENV['ANDROID_SHA256_CERT_FINGERPRINT'] %>"
+      ]
+    }
+  }
+]