fix(cli): unbreak extension example and fix __runtime_js_sources (#22906)

Better example to close https://github.com/denoland/deno/issues/22600

---------

Signed-off-by: Matt Mastracci <matthew@mastracci.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/runtime/examples/extension/bootstrap.js b/runtime/examples/extension/bootstrap.js
new file mode 100644
index 000000000..9461acb84
--- /dev/null
+++ b/runtime/examples/extension/bootstrap.js
@@ -0,0 +1,7 @@
+// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+import { op_hello } from "ext:core/ops";
+function hello() {
+  op_hello("world");
+}
+
+globalThis.Extension = { hello };