Update Windows app launcher and app id

[vkbo]

Summary:

This PR makes a few improvements to running on Windows where the app id is now static, and the launcher exe does not exit after opening the python app itself.

Related Issue(s):

Closes #2728

Reviewer's Checklist:

• The header of all files contain a reference to the repository license
• The overall test coverage is increased or remains the same as before
• All tests are passing
• All linting checks are passing and the style guide is followed
• Documentation (as docstrings) is complete and understandable
• Only files that have been actively changed are committed