Fix re-run failures and update MakeMKV to 1.18.3 (#17)

* Fix sourced-script exit bugs and add bootstrap completion message

- Replace exit 1 with return 1 in debian/bootstrap and
  install-jetbrains-tools so failures don't kill the user's shell
  when scripts are run via 'source <(curl ...)'
- Add 'Bootstrap complete!' message at end of debian/bootstrap so
  the user knows when the run has finished (previously the script
  ended silently after github-auth-login)
- Fix install-makemkv to use 'command -v' instead of 'type' to
  suppress spurious output when checking for makemkv
- Add descriptive error messages to all return 1 paths in
  install-makemkv so failures explain what went wrong

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

* Fix re-run failures and update MakeMKV to 1.18.3

- install-eza-themes: remove existing dir before cloning so re-runs
  don't fail with 'destination already exists'
- install-tmux-catppuccin-theme: same fix - remove existing tmux dir
  before cloning
- install-makemkv: bump version 1.18.2 -> 1.18.3 (1.18.2 returns 404)

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

---------

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

Author: mapitman

debian/install-makemkv

@@ -4,7 +4,7 @@
 # Install makemkv
 if ! command -v makemkv &>/dev/null
 then
-    MAKEMKV_VERSION="1.18.2"
+    MAKEMKV_VERSION="1.18.3"
     mkdir -p /tmp/makemkv-build
     pushd /tmp/makemkv-build || { echo "ERROR: Failed to enter /tmp/makemkv-build"; return 1; }
 

generic/install-eza-themes

@@ -1,6 +1,7 @@
 #!/usr/bin/env bash
 # source <(curl -fsSL https://raw.githubusercontent.com/mapitman/linux-bootstrap/main/generic/install-eza-themes)
 
+rm -rf "$HOME/.local/share/eza-themes"
 git clone https://github.com/eza-community/eza-themes.git ~/.local/share/eza-themes
 mkdir -p ~/.config/eza
 ln -sf "$HOME/.local/share/eza-themes/themes/catppuccin-mocha.yml" ~/.config/eza/theme.yml

generic/install-tmux-catppuccin-theme

@@ -2,6 +2,7 @@
 # source <(curl -fsSL https://raw.githubusercontent.com/mapitman/linux-bootstrap/main/generic/install-tmux-catppuccin-theme)
 
 mkdir -p ~/.config/tmux/plugins/catppuccin
+rm -rf ~/.config/tmux/plugins/catppuccin/tmux
 if git clone -b v2.1.3 https://github.com/catppuccin/tmux.git ~/.config/tmux/plugins/catppuccin/tmux; then
   echo "Catppuccin theme for tmux has been installed."
   echo "To apply the theme, add the following line to your .tmux.conf file:"