refactor: split mpv plugin into modular script directory

plugin/subminer/state.lua

@@ -0,0 +1,33 @@
+local M = {}
+
+function M.new()
+	return {
+		overlay_running = false,
+		texthooker_running = false,
+		overlay_process = nil,
+		binary_available = false,
+		binary_path = nil,
+		invisible_overlay_visible = false,
+		hover_highlight = {
+			revision = -1,
+			payload = nil,
+			saved_sub_visibility = nil,
+			saved_secondary_sub_visibility = nil,
+			overlay_active = false,
+			cached_ass = nil,
+			clear_timer = nil,
+			last_hover_update_ts = 0,
+		},
+		aniskip = {
+			mal_id = nil,
+			title = nil,
+			episode = nil,
+			intro_start = nil,
+			intro_end = nil,
+			found = false,
+			prompt_shown = false,
+		},
+	}
+end
+
+return M