feat: add more configurations and a new theme

- a theme based on carbon and vim high contrast
- modify layouts in zellij and add support for swaps
- add snippets

Signed-off-by: Avinal Kumar <avinal.xlvii@gmail.com>

.config/ghostty/config

@@ -10,7 +10,7 @@ bold-is-bright = true
 freetype-load-flags = hinting,autohint,light
 
 # Appearance
-theme = "vim_dark_high_contrast"
+theme = "space_carbon"
 window-decoration = true
 window-padding-x = 4
 window-padding-y = 2

.config/ghostty/themes/space_carbon

@@ -19,6 +19,6 @@ palette = 15=#ffffff
 background = #000000
 foreground = #c1c9d2
 cursor-color = #c1c9d2
-cursor-text = #111111
-selection-background = #3e4043
+cursor-text = #0c0c0c
+selection-background = #393939
 selection-foreground = #ffffff