Remote TCP improvements

[srcejon]

This PR contains some fixes/improvements to Remote TCP Sink and Device to help with #1827

RemoteTCPInput:

• Add basic remote device sample rate range checking.
• Add IP address history.
• Add SDRPlay LNA gain support.

RemoteTCPSink:

• Add support for settings keys.
• Bind to requested interface.
• Set RTLSDR device ID according to tuner type.

SDRPlayV3:

• Add support for lnaGain API setting, to allow gain to be set more easily.

RTLSDR:

• Add tuner type to Web API report.

mainparser:

• Default to 0.0.0.0 instead of 127.0.0.1 for --remote-tcp-address

Also, while adding settings keys to RemoteTCPSink, I noticed a few small problems in localsink and m17demod's settings keys this patch should fix.