Add equalizer profile for RME TotalMix Room EQ to webui

[pmeulen]

Add an equalizer profile to the AutoEq webui for exporting the EQ parameters as a .tmreq Room EQ preset that can be imported in RME TotalMix.

Room EQ is a 9 band parametric EQ where frequency, Q and gain can be freely set for all bands. I chose to use low/high shelving filters for bands 1 and 9 respectively and allow the optimizer to choose their frequency, but to limit their Q to 1 (these can also go to 9.9). These two shelves could be switched to peaking, but I think that using them as shelves will offer the most flexibility generally speaking as 7 EQs should be enough to correct most issues.

Tested on OSX with a RME UCX II with Firmware 43 and TotalMix 1.95.