github: Try adding a basic github CI test

Author: rwmjones

.github/workflows/main.yml

@@ -0,0 +1,37 @@
+# Run the job below on every push to master branch.
+on:
+  push:
+    branches:
+      - master
+
+# Runs basic configure, make and make check.
+jobs:
+  tests:
+    name: Build and run the tests
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install build dependencies
+        run: |
+          sudo sed -i 's/Types: deb$/Types: deb deb-src/g' \
+                   /etc/apt/sources.list.d/ubuntu.sources
+          sudo apt-get update
+          sudo apt-get -y build-dep libguestfs
+          # Git is needed to run git submodule command.
+          # json-c is apparently missing from the Ubuntu package deps.
+          sudo apt-get -y install git libjson-c-dev
+      - name: Checkout sources
+        uses: actions/checkout@v2
+      - name: Checkout submodule
+        run: |
+          git submodule update --init
+      - name: Compile the code
+        run: |
+          autoreconf -fiv
+          ./configure
+          make
+      - name: Run the quick test
+        run: |
+          make quickcheck
+      - name: Run the full tests
+        run: |
+          make check