enpass: Add registry script

[tribina]

enpass registry script to register the app URL for auth flows.

PR for reg scrip as requested here: https://github.com/ScoopInstaller/Extras/issues/5613#issuecomment-1008366794

Closes #XXXX

Relates to #XXXX

• [x] I have read the Contributing Guide.

[HUMORCE]

Path of Enpass.exe should be replaced in install script.

[jasongodev]

/verify