Fix SDK tests (#13759)

- Updates vitest and adds vitest config so that vscode can see the tests
for easier integration/debugging
- Fixes return types of entity manager versions
- Fixes mocks to not mock the pure functions from the uploadhelpers
- Fixes uploadAlbum to return albumId not playlistId
- Fixes createPlaylist to allow setting playlistContents
- Fixes updateTrack to allow uploading cover art changes

Author: rickyrombo

.changeset/purple-frogs-guess.md

@@ -0,0 +1,5 @@
+---
+'@audius/sdk': patch
+---
+
+Fix tests, fix return types of entity manager variation of APIs