GeniusLyrics: update to parse latest HTML of returned lyrics,

devolving the removal of various crud to `HtmlLyricsProvider`;
  log initial query and use new `StartsOrEndsMatch()` static to
  match JSON replies, log each request, and break if full match;
  `StartsOrEndsMatch()` ignores some common punctuation variations
   & normalizes single quotes and allows match at beginning or end
HtmlLyricsProvider: fix `multiple` mode not to terminate on first
  batch, and defer processing till have whole HTML (avoids issues
  with tags spanning batches);
  add param to take list of regular expressions to remove from HTML
  prior to general processing (used only by `GeniusLyrics` for now)
README.md etc: update list of lyrics providers supported

dist/unix/org.strawberrymusicplayer.strawberry.appdata.xml

@@ -31,7 +31,7 @@
       <li>Edit tags on audio files</li>
       <li>Automatically retrieve tags from MusicBrainz</li>
       <li>Album cover art from Last.fm, Musicbrainz, Discogs, Musixmatch, Deezer, Tidal, Qobuz and Spotify</li>
-      <li>Song lyrics from Genius, Musixmatch, ChartLyrics, lyrics.ovh, lololyrics.com, songlyrics.com, azlyrics.com and elyrics.net</li>
+      <li>Song lyrics from Genius, Musixmatch, ChartLyrics, lyrics.ovh, lololyrics.com, songlyrics.com, azlyrics.com, elyrics.net, letras.mus.br and LyricFind</li>
       <li>Audio analyzer and equalizer</li>
       <li>Transfer music to mass-storage USB players, MTP compatible devices and iPod Nano/Classic</li>
       <li>Scrobbler with support for Last.fm, Libre.fm and ListenBrainz</li>

dist/unix/strawberry.1

@@ -29,7 +29,7 @@ Features:
 .br
 - Album cover art from Last.fm, Musicbrainz, Discogs, Musixmatch, Deezer, Tidal, Qobuz and Spotify
 .br
-- Song lyrics from Lyrics.com, Genius, Musixmatch, ChartLyrics, lyrics.ovh and lololyrics.com
+- Song lyrics from Genius, Musixmatch, ChartLyrics, lyrics.ovh, lololyrics.com, songlyrics.com, azlyrics.com, elyrics.net, letras.mus.br and LyricFind
 .br
 - Support for multiple backends
 .br

dist/unix/strawberry.spec.in

@@ -93,7 +93,7 @@ Features:
   - Edit tags on audio files
   - Automatically retrieve tags from MusicBrainz
   - Album cover art from Last.fm, Musicbrainz, Discogs, Musixmatch, Deezer, Tidal, Qobuz and Spotify
-  - Song lyrics from Genius, Musixmatch, ChartLyrics, lyrics.ovh, lololyrics.com, songlyrics.com, azlyrics.com and elyrics.net
+  - Song lyrics from Genius, Musixmatch, ChartLyrics, lyrics.ovh, lololyrics.com, songlyrics.com, azlyrics.com, elyrics.net, letras.mus.br and LyricFind
   - Support for multiple backends
   - Audio analyzer
   - Audio equalizer