Add git workflow

.github/workflows/deploy.and.test.yml

@@ -0,0 +1,30 @@
+name: Create a Scratch Org, Push Source and Run Apex Tests
+
+on:
+  push:
+  pull_request_target:
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          ref: ${{github.event.pull_request.head.ref}}
+          repository: ${{github.event.pull_request.head.repo.full_name}}
+      - name: Install SFDX CLI and authorize DevHub
+        uses: sfdx-actions/setup-sfdx@v1
+        with:
+          sfdx-auth-url: ${{ secrets.SFDX_AUTH_URL }}
+      - run: echo y | sfdx force:org:list
+      - run: echo y | sfdx plugins:install shane-sfdx-plugins
+      - run: sfdx force:org:create -f config/project-scratch-def.json --setdefaultusername -d 1
+      - run: sfdx shane:github:src:install -c -g apex-enterprise-patterns -r fflib-apex-mocks -p sfdx-source/apex-mocks
+      - run: sfdx shane:github:src:install -c -g apex-enterprise-patterns -r fflib-apex-common -p sfdx-source/apex-common
+      - run: sfdx force:source:push
+      - run: sfdx force:apex:test:run -w 5
+      - name: Destroy scratch org
+        run: sfdx force:org:delete -p
+        if: always()