Add lynket browser

[UnforgivableStone]

Is your feature request related to a problem? Please describe.
No

Describe the solution you'd like
Add lynket browser to ffupdater

Additional context
Its open source, and uses googles custom tab protocol.

[Chris]

This browser hasn't been updated in over 4 years. Why would they want to add a browser that's no longer under development?

[Tobias Hellmann]

I understand that even maintaining a Chromium fork is a lot of work. But adding a browser that is very rarely updated is a disservice to most FFUpdater users.