Add wider API support of RasPi Pico SDK

[suikan4github]

Currently, we support only a few modules of RasPi Pico SDK. Expand it to wider.

The first target is :

Module	Done
hardware_adc	x
hardware_base	Skipped. Macro only.
hardware_boot_lock	Skipped. Not published API.
hardware_clocks	x
hardware_dcp	Skipped. Assembly macro only.
hardware_divider	x
hardware_dma	x
hardware_exception	x
hardware_flash	x
hardware_gpio	x
hardware_i2c	x
hardware_interp	x
hardware_irq	x
hardware_pio	x
hardware_pll	x
hardware_powman	x
hardware_pwm	x
hardware_rcp	x
hardware_resets	x
hardware_rtc	x
hardware_sha256	x
hardware_spi	x
hardware_sync	x
pico_sync	x
hardware_ticks	x
hardware_timer	x
hardware_uart	x
hardware_vreg	x
hardware_watchdog	x
hardware_xosc	x