mbedtls v3 compatibility

Fix mbedtls_sha1 reference once again.

Adding ID3 tags to stream capture

Adding TITLE, ARTIST, ALBUM and StationID in COMMENT
Add ReplayGain to ID3 tags using RVA2 tag

Fix: Handle file creation errors better (non-writeable path)

Cleanup deprecated functions and remove BSD dependencies

Remove BSD dependencies (replace fgetln with getline).
Remove use of deprecated declarations and functions (_BSD_SOURCE, mbedtls_sha1)
Fix shoutcast buffer free error

Replace MP3 decoder with mpg123

Removing obsolete/un-maintained libmad and adding libmpg123 for MP3 decoding (Pandora one)

Misc updates

Highlights:

• Fix sync errors on embedded ID3 tags causing skipped tracks and empty captured tracks.
• Add setting of credentials for shoutcast server authentication to start-script processing.

Initial release for OpenWrt/LEDE

Forked release from Deviousfish with some additional features:

• Optional support for Shoutcast server
• Replacing deprecated PolarSSL support with mbed TLS
• Optional support for CA certificate validation instead of TLS fingerprint