Add Github actions

.github/workflows/go.yml

@@ -0,0 +1,28 @@
+# This workflow will build a golang project
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-go
+
+name: Go
+
+on: [push]
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '1.21'
+
+    - name: Build
+      run: go build -v ./...
+
+    - name: Test
+      run: go test -v -race -covermode=atomic -coverprofile=coverage.out ./...
+
+    - uses: codecov/codecov-action@v2
+      with:
+        file: coverage.out

README.md

@@ -1,6 +1,9 @@
 Triax EoC Exporter
 ==================
 
+[![Build](https://github.com/digineo/triax-eoc-exporter/actions/workflows/go.yml/badge.svg)](https://github.com/digineo/triax-eoc-exporter/actions/workflows/go.yml)
+[![Codecov](http://codecov.io/github/digineo/triax-eoc-exporter/coverage.svg?branch=master)](http://codecov.io/github/digineo/triax-eoc-exporter?branch=master)
+
 This is a [Prometheus](https://prometheus.io/) exporter for
 [Triax EoC controllers](https://www.triax.com/products/ethernet-over-coax).