[DL+] numeric character reference for non latin1 code points #1124
Description
On DAB+ players the show Groovэxpress may be rendered as Groovэpress.
There are also other cases that don't clearly look like they are latin1:
The char э is not supported by DAB+, we should be sending DL+ in latin1.
nowplaying/nowplaying/track/observers/smc_ftp.py
Lines 103 to 108 in 48f7078
In this case, we need to transliterate the show name to GroovExpress (or Groovxpress, Groovexpress, 🤷) for it too look nice on DAB+.
We might have had similar code in production at some point in the past, but got rid of it when we migrated everything to unicode. Most likely we can leverage something like https://github.com/claudep/translitcodec to do the heavy lifting in a way that works for more strings.