* Add doctor check of app.ini paths

* Make /custom dir not mandatory

* Fix message and improve interface

* Update cmd/doctor.go

Co-Authored-By: John Olheiser <42128690+jolheiser@users.noreply.github.com>

* Apaise lint

* Isn't the linter a sweet? (1)

* Isn't the linter a sweet? (2)

* Isn't the linter a sweet?? (3)

* Restart CI

Co-authored-by: John Olheiser <42128690+jolheiser@users.noreply.github.com>
Co-authored-by: zeripath <art27@cantab.net>

* add doctor

* Add a new command doctor to check if some wrong configurations on gitea instance

* fix import

* use regex match authorized_keys on doctor

* Add documentation