Setup CI

Author: olevitt

.github/workflows/build.yml

@@ -0,0 +1,6 @@
+steps:
+  - uses: actions/checkout@v2
+  - uses: actions/setup-go@v2-beta
+    with:
+      go-version: "^1.13.1" # The Go version to download (if necessary) and use.
+  - run: go version && GO111MODULE=on go build -o onyxia-cli main.go