Add ability to open KCL samples in-app (#3912)

* Add a shell script to get the list of KCL samples into the app

* Add support for overwriting current file with sample

* Move these KCL commands down into FileMachineProvider

* Add support for creating a new file on desktop

* Make it so these files aren't set to "renaming mode" right away

* Add support for initializing default values that are functions

* Add E2E tests

* Add a code menu item to load a sample

* Fix tsc issues

* Remove `yarn fetch:samples` from `yarn postinstall`

* Remove change to arg initialization logic, I was holding it wrong

* Switch to use new manifest file from kcl-samples repo

* Update tests now that we use proper sample titles

* Remove double-load from units menu test

* @jtran feedback

* Don't encode `https://` that's silly

* fmt

* Update e2e/playwright/testing-samples-loading.spec.ts

Co-authored-by: Kurt Hutten <k.hutten@protonmail.ch>

* Test feedback

* Add a test step to actually check the file contents were written to (@Irev-Dev feedback)

---------

Co-authored-by: Kurt Hutten <k.hutten@protonmail.ch>

src/components/CommandBarOverwriteWarning.tsx

@@ -0,0 +1,16 @@
+interface CommandBarOverwriteWarningProps {
+  heading?: string
+  message?: string
+}
+
+export function CommandBarOverwriteWarning({
+  heading = 'Overwrite current file?',
+  message = 'This will permanently replace the current code in the editor.',
+}: CommandBarOverwriteWarningProps) {
+  return (
+    <>
+      <p className="font-bold text-destroy-60">{heading}</p>
+      <p>{message}</p>
+    </>
+  )
+}