feat(web-player): add the albums pages

A grid of your albums with a create dialog, and a detail page with the
tracklist, inline editing and a picker that lists the songs you uploaded so
they can be dropped into the album. Covers reuse the playlist mosaic since an
album has no artwork of its own yet.

web-player/src/lib/config.ts

@@ -2,5 +2,9 @@ export const EXPLORE_PAGE_SIZE = 27;
 export const SEARCH_DEBOUNCE_MS = 450;
 export const SEARCH_MIN_LENGTH = 2;
 export const INFINITE_SCROLL_ROOT_MARGIN = '300px';
+export const ALBUMS_PAGE_SIZE = 50;
+export const ALBUM_TRACKS_PAGE_SIZE = 200;
+export const ALBUM_EARLIEST_YEAR = 1877;
+export const LIBRARY_PICKER_PAGE_SIZE = 50;
 export const HOME_LATEST_PAGE_SIZE = 12;
 export const YOUTUBE_FILLER_LIMIT = 27;