Is your feature request related to a problem? Please describe.
It is not possible to set up Semaphore to use already created GitGub App, it always creates a new one
Describe the solution you'd like
I would like to be able to set up a GitHub App by providing the credentials and other required parameters like it is possible with Bitbucket and Gitlab integrations.
Describe alternatives you've considered
No response
Additional context
No response