Change Dont show again to a setting

[jonathanwangg]

Description:

Change the Don't Show Again from a globalState to a Setting that is persisted and can be changed easily.

Type of change

• New feature (non-breaking change which adds functionality)

Limitations:

None

Testing:

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Run the "New File" Command, click "Don't Show Again", Run the "New File" command and make sure you don't see the pop up anymore.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules