feat: Add user customization and refactor for readability

- Add user customization via automatically detected user.lua file
- Reorganize config options into separate files
- Reorganize plugin loaders into separate files

config/colors.lua

@@ -0,0 +1,66 @@
+--          ╭─────────────────────────────────────────────────────────╮
+--          │                         COLORS                          │
+--          ╰─────────────────────────────────────────────────────────╯
+-- Load WezTerm module
+local wezterm = WEZTERM
+
+local types = require("types")
+
+local cur_hour = wezterm.time.now():format("%H")
+
+local hour_angle = require("funcs").get_hour_angle(cur_hour)
+
+local opts = {
+	-- Color Scheme
+	color_scheme = "Catppuccin Mocha",
+	-- Tab Bar Colors
+	colors = {
+		-- Compose Cursor
+		compose_cursor = "#a5e3a0",
+		-- Visual Bell
+		visual_bell = "#E78284",
+	},
+	-- Command Palette Colors
+	command_palette_bg_color = "#232634", -- Command Palette Background
+	command_palette_fg_color = "#C6D0F5", -- Command Palette Foreground
+	-- Titlebar and Frame Colors
+	window_frame = {
+		active_titlebar_bg = "#232634",
+		inactive_titlebar_bg = "#303446",
+		inactive_titlebar_fg = "#484D69",
+		active_titlebar_fg = "#C6D0F5",
+		inactive_titlebar_border_bottom = "#3b3052",
+		active_titlebar_border_bottom = "#3b3052",
+		button_fg = "#C6D0F5",
+		button_bg = "#3b3052",
+		button_hover_fg = "#C6D0F5",
+		button_hover_bg = "#2b2042",
+		font = wezterm.font(types.win_font),
+		-- Tab Font Size
+		font_size = 10,
+	},
+	-- Inactive Pane Filter
+	inactive_pane_hsb = {
+		saturation = 1.0,
+		brightness = 0.5,
+	},
+	window_background_gradient = {
+		orientation = {
+			Linear = {
+				angle = hour_angle,
+			},
+		},
+		colors = {
+			-- "#303446",
+			"#24273a",
+			"#1e1e2e",
+		},
+		interpolation = "CatmullRom",
+		blend = "Oklab",
+		noise = 128,
+		segment_size = 7,
+		segment_smoothness = 1.0,
+	},
+}
+
+return opts