build: enable consistent type imports eslint rule (#7992)

* build: enable consistent type imports eslint rule

* change to warn

* fix the warning in example and excalidraw-app

* fix packages

* enable type annotations and throw error for the rule

packages/excalidraw/gesture.ts

@@ -1,4 +1,4 @@
-import { PointerCoords } from "./types";
+import type { PointerCoords } from "./types";
 
 export const getCenter = (pointers: Map<number, PointerCoords>) => {
   const allCoords = Array.from(pointers.values());