Add support for Gotify

[linusg]

https://gotify.net/

a simple server for sending and receiving messages

Sending messages to the Gotify server for broadcasting is super easy: https://gotify.net/docs/pushmsg

HTTP POST to /message?token=<apptoken> with title, message and priority in the application/x-www-form-urlencoded request body.

[welcome]

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[liiight]

Does this mean you don't want this anymore?

[linusg]

Oops, didn't mean to close this!

[liiight]

No worries, a valid bump 😉
I'm actually thinking about a major refactor in notifiers and I'm kinda reluctant to add new providers as I'll need to rewrite them later on

[tlex]

FYI Gotify has a very nice API documentation here: Swagger UI.

[liiight]

Thanks for the link! Note that I have definitely not abandoned this idea (or this project) but just under major time constraints. I'm anxious to get back into this