feat: convert hypr config to Lua and add Chester host

- Add Lua equivalents for hyprland, autostart, keybindings, programs, windowrule
- Add per-host Lua configs (Chester, Rutherford, example) with hostname detection
- Rename old host 'William' to 'Chester'; fix 2x scaling on the 2880x1800 panel
- Update .gitignore to track *.lua host files instead of example-host.conf

hypr/hosts/Rutherford.lua

@@ -0,0 +1,9 @@
+-- Host-specific overrides: Rutherford (desktop PC)
+-- Converted from hosts/Rutherford.conf
+
+hl.monitor({
+    output   = "DP-1",
+    mode     = "2560x1440@74.97",
+    position = "0x0",
+    scale    = 1,
+})