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/strawberry.1

@@ -29,7 +29,7 @@ Features:
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 - Album cover art from Last.fm, Musicbrainz, Discogs, Musixmatch, Deezer, Tidal, Qobuz and Spotify
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-- 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
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 - Support for multiple backends
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