New kitty image backend (#74)

* Initial attempt at supporting new backend for kitty images

* it's almost working !!

* it almost basically works

* yaaayyyy it works

* Use github kittage

* Uhhhh various improvements from kittage and psx-shm

* Remove logging

* incorporate recovering from deleted images

* Make it work correctly with ghostty image eviction too

* fall back to stdout if shms don't work

* Make help page work again

* zooming basically does what you'd expect now

* yay zooming woohoo

* clean up top and bottom rendering

* Only allow zooming in kitty

* Add debug logging and fix cursor placement after image display

* yaaaay zooming out once you're already zoomed in and respecting kitty's limits for how big of an image to display

* mmmm maybe it's finally ready to merge...

* Update deps

* Switch around list of items on changelog

* fmt

* Small fixes to avoid panic and allow zooming back in after zooming out

CHANGELOG.md

@@ -1,7 +1,9 @@
 # Unreleased
 
-- Update ratatui(-image) dependencies
+- Update to new `kittage` backend for kitty-protocol-supporting terminals (fixes many issues and improves performance significantly, see [the PR](https://github.com/itsjunetime/tdf/pull/74))
 - Use new mupdf search API for slightly better performance
+- Update ratatui(-image) dependencies
+- Allow specification of default white and black colors for rendered pdfs
 - Pause rendering every once in a while while there's a search term to enable searching across the entire document more quickly
 - Fix an issue with missing search highlights