chore: list capabilities main

refactor(resets): use mmio_wait_status instead

feat(gpio): basic gpio peripheral added

chore: readme

chore(pll): implement HAL for both PLLs and clocks

todo: add todo for clocks

feat(clock): add clock and start on uart

chore: add basic mmio functions

style(hal): reformatted registers

chore(hal): added register addresses