fix: add constants and side methods to packages (#10418)

* fix: add constants and side methods to packages

* add transform to the element package

* lint

* remove dead code

* put transform types back to transform.ts

* fix imports

* fix imports in test

---------

Co-authored-by: dwelle <5153846+dwelle@users.noreply.github.com>

packages/common/src/constants.ts

@@ -108,6 +108,13 @@ export const CLASSES = {
   FRAME_NAME: "frame-name",
 };
 
+export const FONT_SIZES = {
+  sm: 16,
+  md: 20,
+  lg: 28,
+  xl: 36,
+} as const;
+
 export const CJK_HAND_DRAWN_FALLBACK_FONT = "Xiaolai";
 export const WINDOWS_EMOJI_FALLBACK_FONT = "Segoe UI Emoji";