vim: add plugins, tmux: status bar, fix Ctrl+A clash

- Add vim-gitgutter, vim-commentary, vim-surround via install
script
- Rebind git log widget from Ctrl+A to Ctrl+T (tmux prefix
clash)
- Add date, time, and battery indicator to tmux status
bar
- Set tmux clock colour to teal

Co-authored-by: Copilot
<223556219+Copilot@users.noreply.github.com>

home/.zsh/widgets.zsh

@@ -91,7 +91,7 @@ _dots_load_keybindings() {
     zle -N _dots_find_in_files_widget
     bindkey '^F' _dots_find_in_files_widget
 
-    # Ctrl+A: git log browser
+    # Ctrl+Q: git log browser
     _dots_git_log_widget() {
         local commit
         commit="$(git log --oneline --color --decorate -50 2>/dev/null \
@@ -103,7 +103,7 @@ _dots_load_keybindings() {
         zle accept-line
     }
     zle -N _dots_git_log_widget
-    bindkey '^A' _dots_git_log_widget
+    bindkey '^Q' _dots_git_log_widget
 
     # Ctrl+K: command help lookup
     _dots_help_widget() {