MainBoard: Swap encoders power polarity

MainBoardBRD: Remove SolderPaste from jumpers

MainBoard: Fix pinout.xlsx and STM32F103VCTx.ioc

MainBoard: Swap PWM3A and PWM3B to maintain consistency

MainBoardBRD: Rotate some packages in libraries to match JLCPCB orientation

MainBoardBRD: Add placeholder text for JLCPCB order number

MainBoardBRD: Add tooling holes, required by JLCPCB SMT assembly

hw: Add default V resistors, fix polygon Q1, prepare manufacturing data - add 0R resistors as default voltage selector for SJx - improve size of polygon for Q1 due to better cooling - prepare manufacturing data - renumber parts in schema - create `parts_SMT.xlsx` file with updated data - add CAM processor configuration

hw: add link to RoboticsBrno/eagle_libraries

ele/hw: clean and refactor project structure - rename folder `ele` to `hw` - remove folder `MainBoard` - to folder `hw` add folders `lib`,`configuration` and `designBlock` - rename `RBCX-MainBoard{.brd/.sch}` to `RBCX{.brd/.sch}`