ci: Build iOS app with fastlane

Adds all the signing keys and other credentials required for a
successful production build.

Additionally, opens the door to deploying via CI.

Author: thehale

.github/workflows/ios.yml

@@ -0,0 +1,32 @@
+name: "iOS"
+
+on:
+  push:
+    branches: ["master", "ci"]
+
+jobs:
+  build:
+    timeout-minutes: 20
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup Java
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 17
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
+      - name: Install dependencies
+        run: |
+          yarn install
+          yarn pods
+      - name: Build Application
+        run: |
+          echo $SECRETS_TAR_GZ_B64 | base64 -d | tar -xz -C fastlane
+          bundle exec fastlane ios build
+        env:
+          SECRETS_TAR_GZ_B64: ${{ secrets.SECRETS_TAR_GZ_B64 }}
+          MATCH_GIT_BASIC_AUTHORIZATION: ${{ secrets.MATCH_GIT_BASIC_AUTHORIZATION }}

fastlane/Fastfile

@@ -21,14 +21,14 @@ platform :ios do
 
   desc 'Fetch certificates and provisioning profiles'
   lane :certificates do
+    setup_ci if ENV['CI']
     match(type: 'development', keychain_password: ENV['MATCH_PASSWORD'])
     match(type: 'appstore', keychain_password: ENV['MATCH_PASSWORD'])
   end
 
   desc 'Build the iOS application.'
   lane :build do
-    # certificates
-
+    certificates if ENV['CI']
     require "json"
     package_json = JSON.parse(File.read("../package.json"))
     increment_version_number_in_xcodeproj(