Add default config file for coreMQTT and coreSNTP

guowenxue

2025-07-24 6848a42d2c7ca219afe7fe9fbc6d657cc979de02

Add default config file for coreMQTT and coreSNTP

 project/coreMQTT/coreMQTT/core_mqtt_config.h

New file
@@ -0,0 +1 @@
core_mqtt_config_defaults.h

 project/coreMQTT/coreSNTP/core_sntp_config.h

New file
@@ -0,0 +1 @@
core_sntp_config_defaults.h