EQ improvements, inconsitent dragging and overlapping fix #3268
Description
When using deadbeef's EQ it's hard to see values around -1.0 to 1.0 since the numeric value is completely or partially overlapped by scale (+0db), as seen in screenshot.
I'd suggest offseting the numeric label so they don't overlap
Additionally drag sensitivity is inconsistent, sometimes the band can jump in 0.1 dB steps in one session and 0.2 dB steps in another, or even alternate between odd and even tenths (e.g. 2.7 - 2.9 - 3.1 on one band, 2.6 - 2.8 - 3.0 on the next).
It would also be convenient to be able to just type in exact dB value I want.