some fixes after modifications:
1. removed the use of waiting_command_t
2. fix assert for HCI write_eir command
3. fixed the crash upon handling command status event when trying to free to the HCI command buffer
4. fixed the issue in transmitting HCI vendor specific commands
5. fixed the lost command complete callbacks for HCI commands LE_RAND and LE_ENCRYPT
1. Improve WiFi throughput in some Classic BT scienarios(idle, inquire scan,
connected, sniff, a2dp pause, etc).
2. Support WiFi + Classic BT + BLE mesh coexistence scienario.
3. Improve WiFi scan and connect succeed ratio in coexistence scienario.
4. Do not support to choose software coexistence preference anymore for it is
determined according to coexistence scienario automatically.
components/lwip: increase TCP send buffer and receive window limitation when TCP window scale is enabled
components/ble_mesh: Fix some bugs about ble mesh
1. fix send acl pkt after ble have sent terminate ind modify min adv interval to 10ms.