Add setup-go

src/setup-go.ts

@@ -0,0 +1,22 @@
+import * as core from '@actions/core';
+import * as installer from './installer';
+
+async function run() {
+  try {
+    //
+    // Version is optional.  If supplied, install / use from the tool cache
+    // If not supplied then task is still used to setup proxy, auth, etc...
+    //
+    const version = core.getInput('version');
+    if (version) {
+      await installer.getGo(version);
+    }
+
+    // TODO: setup proxy from runner proxy config
+    // TODO: problem matchers registered
+  } catch (error) {
+    core.setFailed(error.message);
+  }
+}
+
+run();