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/CommandBar/CommandBarReview.tsx

@@ -58,7 +58,17 @@ function CommandBarReview({ stepBack }: { stepBack: () => void }) {
 
   return (
     <CommandBarHeader>
-      <p className="px-4">Confirm {selectedCommand?.name}</p>
+      <p className="px-4">
+        {selectedCommand?.reviewMessage ? (
+          selectedCommand.reviewMessage instanceof Function ? (
+            selectedCommand.reviewMessage(commandBarState.context)
+          ) : (
+            selectedCommand.reviewMessage
+          )
+        ) : (
+          <>Confirm {selectedCommand?.name}</>
+        )}
+      </p>
       <form
         id="review-form"
         className="absolute opacity-0 inset-0 pointer-events-none"