Add Rp2040 suspend & resume support

[hathach]

Describe the PR
This PR update rp2040 devvice

• Add supsend and resume support, comment out disconnection interrupt since it is not detectable since we are forcing vbus detect
• comment / whitespace / clean up dcd rp2040 e.g stall / clear stall
• reset all endpoints upon bus_reset (previously only allocated once per power), however, device can dynamically change its configuration. It is better to enumerate with a clean state.

hopefully fix adafruit/circuitpython#4190, adafruit/circuitpython#5101

Additional context
Currently rp2040 force vbus detect making it difficult to distinguish between Disconnection and Suspend (both are idle bus). Disconnection can be determined by having extra GPIO to check vbus. In case of pico it is GPIO24, however, not all boards implement this on their schematics.

Note: Other MCUs such as samd and esp32s2/s3 has similar issue as well, will try to find an common API to resolve this in future PR