MainBoardBRD: move mounting holes closer to the board edge

MainBoardBRD: Mirror THT connectors and capacitors, battery holder and buzzer

MainBoard: Replace SMD buttons with THT

MainBoard: Replace UIboard connector and expander connector with FFC/FPC connectors

MainBoard: Remove iLed stepdown and some bulk capacitors, change bulk capacitors package to THT

MainBoardBRD: Fix invalid attributes position

FW: add working example with negative channel output for TIM1

FW: DRV8833-PWM-test fw - fix generating PWM :]

MainBoardBRD: Place most of the parts to the board

MainBoardSCH: Renumber parts MainBoardBRD: Move all parts to one group next to the board