chore(cli-integ): add go init tests in preparation to adding them to our pipeline (#24229)

Based off https://github.com/aws/aws-cdk/blob/ca208058256703759ae5e35d04194edbdc6b1756/packages/aws-cdk/test/integ/init/test-go.sh.

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*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: TheRealAmazonKendra

packages/@aws-cdk-testing/cli-integ/tests/init-go/init-go.integtest.ts

@@ -0,0 +1,16 @@
+import { integTest, withTemporaryDirectory, ShellHelper, withPackages } from '../../lib';
+
+['app', 'sample-app'].forEach(template => {
+  integTest(`init go ${template}`, withTemporaryDirectory(withPackages(async (context) => {
+    context.packages.assertJsiiPackagesAvailable();
+
+    const shell = ShellHelper.fromContext(context);
+    await context.packages.makeCliAvailable();
+
+    await shell.shell(['cdk', 'init', '-l', 'go', template]);
+    await shell.shell(['go', 'mod', 'edit', '-replace', 'github.com/aws/aws-cdk-go/awscdk=$dist_root/go/awscdk']);
+    await shell.shell(['go', 'mod', 'tidy']);
+    await shell.shell(['go', 'test']);
+    await shell.shell(['cdk', 'synth']);
+  })));
+});

packages/aws-cdk/test/integ/init/test-go-app.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+set -eu
+# This is a backwards compatibility script. All logic has moved to '@aws-cdk-testing/cli-integ'
+# and should be called from there directly.
+
+exec ${INTEG_TOOLS}/bin/run-suite --use-cli-release=$VERSION init-go