[FEATURE] note, syslog, gdbstub and console over netdev

### Is your feature request related to a problem? Please describe.

The serial port is not available for some devices (e.g., many x86_64 targets), but the network interface is available. In such a case, it's easier to communicate with the device with network interface only.
For complex systems with multiple NuttX devices in the same network, netdev also seems to be the only sensible solution for logging and debugging.

### Describe the solution you'd like

These are basically 4 separate features, but they are related to each other:

- [ ] note trace over netdev
- [ ] syslog over netdev (like netconsole in Linux)
- [ ] gdbstub over netdev (like kgdboe in Linux)
- [ ] console over netdev (simple stream for local use, without telnet or SSH)

### Describe alternatives you've considered

_No response_

### Verification

- [x] I have verified before submitting the report.