Function encodeZigbeeAPSHeader

encodeZigbeeAPSHeader(
    data: Buffer,
    offset: number,
    header: ZigbeeAPSHeader,
): number
05-3474-23 R23.1, Tables 2-69/2-70 (APS data and command frame formats)

SPEC COMPLIANCE NOTES:
- ✅ Serialises endpoint/group fields following delivery-mode matrix mandated by spec
- ✅ Emits fragmentation header only when requested, matching Zigbee fragmentation rules
- ⚠️ Relies on caller to provide consistent fragmentation settings (block numbers, ACK bitmap) DEVICE SCOPE: All logical devices
Parameters
- data: Buffer
- offset: number
- header: ZigbeeAPSHeader
Returns number
- Defined in src/zigbee/zigbee-aps.ts:322