feat(config): add ghostty terminal and refactor neovim configuration

- Add ghostty terminal configuration with custom themes and settings
- Add multiple color themes (ayu-dark, catppuccin variants, moonfly)
- Configure ghostty appearance: font, opacity, keybindings
- Refactor nvim basic setup to use modern vim.opt API
- Modernize LSP configuration with LspAttach autocmd
- Update nvim-tree configuration for latest API
- Simplify codecompanion plugin setup
- Pin nvim-treesitter to main branch
- Improve sway-dbus script with XDG runtime checks

home/dot_config/ghostty/themes/ayu-dark

@@ -0,0 +1,22 @@
+background = #0b0e14
+foreground = #bfbdb6
+selection-background = #1b3a5b
+selection-foreground = #bfbdb6
+cursor-color = #bfbdb6
+cursor-text = #0b0e14
+palette = 0=#1e232b
+palette = 1=#ea6c73
+palette = 2=#7fd962
+palette = 3=#f9af4f
+palette = 4=#53bdfa
+palette = 5=#cda1fa
+palette = 6=#90e1c6
+palette = 7=#c7c7c7
+palette = 8=#686868
+palette = 9=#f07178
+palette = 10=#aad94c
+palette = 11=#ffb454
+palette = 12=#59c2ff
+palette = 13=#d2a6ff
+palette = 14=#95e6cb
+palette = 15=#ffffff