Update to active hydra fork

[raffaem]

nuvyklack/hydra.nvim is unmaintained, nvimtools/hydra.nvim is the maintained fork.

The talking about maintaining status : anuvyklack/hydra.nvim#101

[GCBallesteros]

Thanks for raising the issue. This is on my todo list once I find the time for it.

[nwpulverizer]

see my pr #63 - was pretty quick drop in replacement. No issues I have sen so far. @GCBallesteros