Add GHA workflow to run test_crosscompile and go test (#141)

* Add GHA workflow to run test_crosscompile and go test
* crosscompile job doesn't need setup-go
* Test more go versions
* Test 1.6
* Remove 1.13 and add comment of testing strategy

.github/workflows/crosscompile.yml

@@ -0,0 +1,17 @@
+name: Crosscompile
+
+on:
+  push:
+    branches:
+    - master
+
+jobs:
+  test:
+    name: Run ./test_crosscompile.sh
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repo
+      uses: actions/checkout@v2
+    - name: Run ./test_crosscompile.sh
+      run: ./test_crosscompile.sh

.github/workflows/test.yml

@@ -0,0 +1,39 @@
+name: Test
+
+on:
+  push:
+    branches:
+    - master
+  pull_request:
+    branches:
+    - master
+
+jobs:
+  test:
+    name: "Test go ${{ matrix.go_version }} on ${{ matrix.platform }}"
+    runs-on: ${{ matrix.platform }}
+
+    strategy:
+        matrix:
+          platform:
+            - ubuntu-latest
+            - macos-latest
+          go_version:
+            # Test the oldest release we targeted and the two currently supported releases (https://go.dev/doc/devel/release#policy)
+            - 1.6.x
+            - 1.17.x
+            - 1.18.x
+
+    steps:
+    - name: Set up Go ${{ matrix.go_version }}
+      uses: actions/setup-go@v2
+      with:
+        go-version: ${{ matrix.go_version }}
+        check-latest: true
+    - name: Checkout repo
+      uses: actions/checkout@v2
+
+    - name: Build
+      run: go build -v
+    - name: Test
+      run: go test -v