Title: add packet_split for vxlan and NicChangeDetect

Highlights

• Added VXLAN packet splitting support in cpworker.
• Added NIC change detection in cpdaemon syncer flow, with automatic re-registration behavior.
• Expanded unit and integration test coverage, including new VXLAN split scenarios.

Added

• New packet split module:
  • cpworker/src/packet_split.c
  • cpworker/src/packet_split.h
• New VXLAN split example config:
  • cpworker/examples/libpcap_vxlan_split.json
• New integration test framework and cases under:
  • cpworker/tests/integration/
• New unit tests for packet splitting:
  • cpworker/tests/unit/packet_split.c

Changed

• output_vxlan now supports split options:
  • split.max_payload_size
  • split.recalculate_checksum
• cpdaemon strategy/model/config pipeline now carries packet split fields:
  • hasPacketSplit
  • packetSplitBytes
  • recalculateChecksum
• Added syncer config support for NIC change detection:
  • syncer.nic_change_detect_enable
  • periodic NIC scan + re-register trigger on change
• Refactored test layout from cpworker/tests/ to clearer cpworker/tests/unit and cpworker/tests/integration.

Fixed / Improved

• VXLAN output error handling improvements (including better error formatting and socket cleanup in error paths).
• Packet parsing/splitting path includes IPv4/IPv6 + TCP/UDP handling and optional checksum recalculation support.
• Added deeper debug visibility for synced strategy payloads in cpdaemon.

Validation

• Added/updated test assets for:
  • file output
  • GRE output
  • VXLAN basic + VXLAN split (TCP/UDP)
  • ZMQ output

Rewrote the entire codebase; components renamed to cpworker and cpdaemon.

add fix for "zombie process of sh"

1. specify interface names for daemonset
2. report libpcap buffer to CPM

Change the "bandwidth-restrict" check to accommodate the traffic jitters.

Change the default log size from 1G to 200M

Below feature added in the feature:

• When forwarding packets with zmq, CP uuid will be add in the zmq header.