feat(i2c): implement i2c master

Author: urish

src/index.ts

@@ -2,6 +2,7 @@ export { GDBConnection } from './gdb/gdb-connection';
 export { GDBServer } from './gdb/gdb-server';
 export { GPIOPin, GPIOPinState } from './gpio-pin';
 export { BasePeripheral, Peripheral } from './peripherals/peripheral';
+export { RPI2C, I2CSpeed, I2CMode } from './peripherals/i2c';
 export { RPUSBController } from './peripherals/usb';
 export { RP2040 } from './rp2040';
 export { USBCDC } from './usb/cdc';