Update support to AT Firmware v1.7.4.0

### Major Releases v1.0.5

1. Add support to ***nRF52 (AdaFruit Feather nRF52832, nRF52840 Express, BlueFruit Sense, Itsy-Bitsy nRF52840 Express, Metro nRF52840 Express, NINA_B30_ublox, NINA_B112_ublox, etc.)***. Dynamic custom parameters to be saved ***automatically in LittleFS***.
2. Add support to ***Adafruit SAMD21/SAM51 (Itsy-Bitsy M0/M4, Metro M0/M4, Grand Central M4, Feather M0/M4 Express, etc.)***. Dynamic custom parameters to be saved ***automatically in FlashStorage***.
3. Add ***MultiWiFi*** features for WiFi
4. Add ***DoubleResetDetector*** (DRD) feature.
5. Increase WPA2 SSID and PW to 63 chars. Permit special chars such as !,@,#,$,%,^,&,* into data fields.
6. Restructure examples separate Credentials / Defines / Dynamic Params / Code.
7. Drop support to Teensy boards.

Author: khoih-prog