Fix following wifi bugs:
1. Fix the bug for API_CHECK_ENABLED
2. Fix the bug that wpa2 enterprise sta can connect open AP
3. Fix TKIP/CCMP PN replay attack detection bug
4. Increase buffer number type from uint8_t to uint16_t to support more than 255 buffers
5. Avoid recalculating PMK if esp_wifi_set_config() is not called
6. Fix the bug that WiFi stop leads to task watchdog
7. Fix smartconfig IPC crash
8. Fix 5.5M signal test bug
9. Move wifi library check to esp32-wifi-lib ci
1. Fix the WiFi/BT coexist bug
2. Fix WPA2 enterprise example crash bug
3. Add size and version check for crypto type struct
4. Add MD5 check for crypto type header file
1. Add detailed return error code for wifi APIs
2. Add description about error code in esp_wifi.h
3. Modify esp_wifi_reg_rxcb to esp_wifi_internal_reg_rxcb
4. Modify esp_wifi_set_sta_ip to esp_wifi_internal_set_sta_ip
5. Mark system_init as deprecated API
1. Modify comments for esp_wifi_internal_tx
2. Fix delay time error in esp32_tx_flow_ctrl which is found in code review,
modify _wait_delay init value from 0 to 1