test: Add main test from template

Doesn't work yet though

test/main.ts

@@ -0,0 +1,17 @@
+import test from 'ava' // eslint-disable-line import/no-unresolved
+import * as cp from 'child_process'
+import * as path from 'path'
+import * as process from 'process'
+
+// eslint-disable-next-line ava/no-skip-test
+test.skip('test runs', t => {
+  process.env['INPUT_VERSION'] = 'v22.10.2'
+  const np = process.execPath
+  const ip = path.join(__dirname, '..', 'lib', 'src', 'main.js')
+  const options: cp.ExecFileSyncOptions = {
+    env: process.env
+  }
+  // eslint-disable-next-line no-console
+  console.log(cp.execFileSync(np, [ip], options).toString())
+  t.pass()
+})