This is a preparation step for adding new advanced voice processing options
to the settings tab.

3 sections have been added: Voice, Video, and Advanced

Signed-off-by: László Várady <laszlo.varady@protonmail.com>

autoGainControl, echoCancellation, and noiseSuppression are audio
processing options that are usually enabled by default on WebRTC input
tracks.

This commit adds the possibility to enable/disable them, as they can be
undesirable in some cases (audiophile use cases). For example, one might
want to stream electronic dance music, which is basically noise, so it
should not be suppressed in that specific case.

Signed-off-by: László Várady <laszlo.varady@protonmail.com>

IState does not seem to be in an "IS-A" relation with
MediaDeviceKindEnum-based records (Liskov substitution principle), so
applying the "composition over inheritance" concept might be a good idea.

This can be refactored further by adding separate types for I/O device
options and for audio settings and then using them in IState via
composition.

Signed-off-by: László Várady <laszlo.varady@protonmail.com>

Signed-off-by: László Várady <laszlo.varady@protonmail.com>

Signed-off-by: László Várady <laszlo.varady@protonmail.com>

Signed-off-by: László Várady <laszlo.varady@protonmail.com>

There are multiple examples of options with null defaults.

Signed-off-by: László Várady <laszlo.varady@protonmail.com>

Signed-off-by: László Várady <laszlo.varady@protonmail.com>