Added Arduino/LM358 SYM/FP, started interconnect design

...ating_driver-backups/heating_driver-2023-03-13_152643.zip

interconnect-board/interconnect_board/#auto_saved_files#

interconnect-board/interconnect_board/fp-info-cache

...ct_board-backups/interconnect_board-2023-03-13_161605.zip

...ct_board-backups/interconnect_board-2023-03-13_180947.zip

...ct_board-backups/interconnect_board-2023-03-13_181612.zip

...ct_board-backups/interconnect_board-2023-03-13_182643.zip

...ect-board/interconnect_board/interconnect_board.kicad_pcb

...ect-board/interconnect_board/interconnect_board.kicad_prl

...ect-board/interconnect_board/interconnect_board.kicad_pro

...ect-board/interconnect_board/interconnect_board.kicad_sch