core: add translations to all texts

mods/move-unitframes.lua

@@ -1,10 +1,11 @@
 local _G = ShaguTweaks.GetGlobalEnv()
+local T = ShaguTweaks.T
 
 local module = ShaguTweaks:register({
-  title = "Movable Unit Frames",
-  description = "Player and Target unit frames can be moved while <Shift> and <Ctrl> are pressed together.",
+  title = T["Movable Unit Frames"],
+  description = T["Player and Target unit frames can be moved while <Shift> and <Ctrl> are pressed together."],
   expansions = { ["vanilla"] = true, ["tbc"] = true },
-  category = "Unit Frames",
+  category = T["Unit Frames"],
   enabled = nil,
 })