Update fish aliases & keybinds, update git config, update Neovim config

Neovim:
- Replace typescript-tools with ts_ls
- Add Markview
- Modify Neo-tree keybinds
- Modify CodeCompanion models
- Add Svelte linting/fixing

.config/fish/functions/define_aliases.fish

@@ -1,6 +1,7 @@
 function define_aliases -a uname -d 'Defines aliases for commonly used commands'
     alias q exit
     alias cl clear
+    alias ls lsd
     alias rcp 'rsync -aP'
     alias vg vagrant
     alias tf terraform