fix image previews in terminal

[jakeisnt]

In Alacritty... there are some X11 terminals that work, but the DPI scaling is terrible with XWayland!

• Find a terminal with proper wayland and images support
• Find an image viewer that successfully previews those images
• Configure them to work!

[jakeisnt]

this now corresponds to lf rather than ranger for image previews but the idea remains the same

• find an executable
• write an lf preview script to support it
• don't just support image previews - also support pdf and video!

[jakeisnt]

looks like switching to 'foot' terminal emulator might get me these wins!

[jakeisnt]

have to also install 'libsixel', which is currently marked 'insecure' in nixpkgs. wait for a future update to fix these vulnerabilities before continuing

[jakeisnt]

https://codeberg.org/dnkl/foot#user-content-installing

[jakeisnt]

This is coming for alacritty (and I'd rather use a cross-platfomr solution than anything else)! https://github.com/alacritty/alacritty/issues/910.

[jakeisnt]

Need to wait for a new alacritty release to support libsixel and thus get this image viewer!