refactor(core): adjust core struct (#8218)

packages/frontend/core/src

hooks -> components/hooks
atoms -> components/atoms
layouts -> components/layouts
providers -> components/providers
mixpanel -> @affine/track
~~shared~~
~~unexpected-application-state~~

packages/frontend/core/src/modules/quicksearch/services/cmdk.ts

@@ -1,4 +1,4 @@
-import { track } from '@affine/core/mixpanel';
+import { track } from '@affine/track';
 import type { DocsService } from '@toeverything/infra';
 import { Service } from '@toeverything/infra';