Add a button for exporting launch script

[zly2006]

Role

I play modded MC and host a 3rd party auth server.

Suggestion

Add a button for exporting launch script.

Benefit

With this script, I can change the access tokens, auth endpoints and other things for debugging purpose. This is more important for me since I am trying to develop a new auth server.

This suggestion is unique

• I have searched the issue tracker and did not find an issue describing my suggestion, especially not one that has been rejected.

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No response