Detox setup

.github/workflows/detox.yml

       - uses: actions/setup-node@master
         with:
           node-version: 12.6
+      - name: Setup - Install Homebrew
+        run: /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
       - name: Setup - Install Yarn
-        run: YARN_GPG=NO curl -o- -L https://yarnpkg.com/install.sh | bash
+        run: brew install yarn --ignore-dependencies
       - name: Setup - Install NPM Dependencies
         run: yarn
       - name: Setup - Install CocoaPods CLI
         run: sudo gem install cocoapods
+      - name: Setup - Install Detox and deps
+        run: |
+          brew tap wix/brew
+          brew install applesimutils
+          yarn global add react-native-cli
+          yarn global add detox-cli
       - name: Run tests
         run: yarn ci