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/tests/helpers/api.ts

@@ -1,4 +1,4 @@
-import {
+import type {
   ExcalidrawElement,
   ExcalidrawGenericElement,
   ExcalidrawTextElement,
@@ -26,10 +26,10 @@ import {
   newImageElement,
   newMagicFrameElement,
 } from "../../element/newElement";
-import { Point } from "../../types";
+import type { Point } from "../../types";
 import { getSelectedElements } from "../../scene/selection";
 import { isLinearElementType } from "../../element/typeChecks";
-import { Mutable } from "../../utility-types";
+import type { Mutable } from "../../utility-types";
 import { assertNever } from "../../utils";
 import { createTestHook } from "../../components/App";