Add meta for locale

Heimdall.lua

@@ -17,6 +17,7 @@ local function init()
     ---@field messenger HeimdallMessengerData
     ---@field who HeimdallWhoData
     ---@field stinkyTracker HeimdallStinkyTrackerData
+    ---@field _L Localization
     ---@field dumpTable fun(table: any, depth?: number): nil
     ---@field utf8len fun(input: string): number
     ---@field padString fun(input: string, targetLength: number, left?: boolean): string