Get album info (when available) from Last.fm, add getAlbumInfo endpoint (#2061)

* lastfm album.getInfo, getAlbuminfo(2) endpoints

* ... for description and reduce not found log level

* address first comments

* return all images

* Update migration timestamp

* Handle a few edge cases

* Add CoverArtPriority option to retrieve albumart from external sources

* Make agents methods more descriptive

* Use Last.fm name consistently

Co-authored-by: Deluan <deluan@navidrome.org>

ui/src/subsonic/index.js

@@ -63,6 +63,10 @@ const getArtistInfo = (id) => {
   return httpClient(url('getArtistInfo', id))
 }
 
+const getAlbumInfo = (id) => {
+  return httpClient(url('getAlbumInfo', id))
+}
+
 const streamUrl = (id) => {
   return baseUrl(url('stream', id, { ts: true }))
 }
@@ -79,5 +83,6 @@ export default {
   getScanStatus,
   getCoverArtUrl,
   streamUrl,
+  getAlbumInfo,
   getArtistInfo,
 }