CLI: Update studio-cli.bat so we can read from stdin

[fredrikekelund]

Related issues

• Fixes STU-1162

Proposed Changes

I've made the following changes to improve the Studio CLI on Windows:

• Remove the call statements preceding ELECTRON_EXECUTABLE and node. These were likely added as an analogue to exec in the bin/studio-cli.sh, but they are not necessary. In fact, they even break stdin parsing (see Linear issue for more details).
• Capture the exit code from the CLI script and pass it to the exit command.
• I've added enabledelayedexpansion. This is a more defensive approach, as it makes it so variables are expanded at runtime rather than at parse time.
• More quotes, to account for any spaces in paths.

Testing Instructions

1. Download the Windows build from pdtkmj-4fD-p2#testing
2. Install it on your Windows workstation
3. Open C:\Users\fredrik\AppData\Local\studio\app-1.6.7-dev20\resources\bin\studio-cli.bat in a text editor
4. Paste the contents of bin/studio-cli.bat from this PR into that file
5. Open a new Command Prompt window
6. Run studio auth logout
7. Run studio auth login
8. Ensure that you can complete the entire login flow successfully

Pre-merge Checklist

• Have you checked for TypeScript, React or other console errors?

[gcsecsey]

I took a dig at testing this, but I couldn't reproduce the original authentication issue on the dev/studio-cli-i2 branch. When running the auth login command, I could paste the token as expected on both branches, in both PowerShell and Command Prompt.

PowerShell	Terminal

[fredrikekelund]

@gcsecsey, this issue happens only when running the production CLI, which uses bin/studio-cli.bat as the actual executable "binary" that we make available on the $PATH.

Testing this change isn't exactly simple, but I've updated the testing instructions so they're (hopefully) easy to follow. The PR is ready for review now.

[epeicher]

Thanks @fredrikekelund! I have tested it following the test instructions; I have reproduced the error with the build version and confirmed this PR fixes the issue. Changes also LGTM!

Build version	Using the bat file from this PR