feature request: Zephyr NVS long write command

[lucasgcbkhomp]

In the Zephyr project there has been a growing need for long writes for devices (adding certificates in base64 or configuration data) without a filesystem.

There is an early implementation of an mcumgr group for NVS here:

zephyrproject-rtos/zephyr#52318

I'd like to know if it would be interesting for the project to have this feature implemented in the device manager for mobile phones. Otherwise, I might just work on a fork.

[philips77]

We'll wait until that issue is resolved.