nRF Connect Device Manager app analytics for March 21

nRF Connect Device Manager is a generic tool for updating and managing devices running nRF Connect SDK supporting Device Manager module over Bluetooth LE (aka Management Subsystem, Mcu Manager, SMP Server). Features: * Basic: echo, reset * Firmware update over-the-air (FOTA, DFU, SUIT) * File System * Logs & stats * Executing shell commands Links: Source code: https://github.com/NordicSemiconductor/Android-nRF-Connect-Device-Manager * nRF Connect SDK: https://www.nordicsemi.com/Software-and-tools/Software/nRF-Connect-SDK * SMP Server Sample Doc: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/samples/subsys/mgmt/mcumgr/smp_svr/README.html#smp-svr-sample * McuManager: https://github.com/nrfconnect/sdk-zephyr/tree/main/subsys/mgmt/mcumgr/lib * SMP over Bluetooth: https://github.com/nrfconnect/sdk-zephyr/blob/main/subsys/mgmt/mcumgr/lib/transport/smp-bluetooth.md