CLI: normalize lora.ignore_incoming IDs (dec/!hex/0x), dedupe, YAML [] clear, fix bytes→int crash

[NillRudd]

Fixes #833

Summary

• Accept node IDs in decimal, !hex, and 0xhex; normalize to int.
• Deduplicate lora.ignore_incoming on write.
• Support clearing via config.lora.ignore_incoming: [] reliably.
• Prevent crash: 'bytes' object cannot be interpreted as an integer.
• Removed some duplicate code.

Why

CLI operations around ignore list were brittle:

• Occasional crash when adding IDs.
• Duplicate entries possible.
• Inconsistent ID formats accepted.
• Clearing via YAML sometimes confusing.

Behavior

• --set lora.ignore_incoming <id> accepts dec/!hex/0xhex and stores one normalized entry.
• --get lora.ignore_incoming reflects deduped list.
• YAML config.lora.ignore_incoming: [] clears list.

Notes

Firmware still shows packets in logs; enforcement is firmware-level and out of scope here.
No breaking changes—CLI becomes more permissive and robust.