treewide: Mark some features experimental

Marking the following features as "experimental":
- nRF Cloud AT commands
- MQTT AT commands
- sm_at_client.h API

Signed-off-by: Tommi Rantanen <tommi.rantanen@nordicsemi.no>

Author: trantanen

app/Kconfig

@@ -248,10 +248,12 @@ config SM_GNSS
 config SM_NRF_CLOUD
 	bool "nRF Cloud support"
 	default y
+	select EXPERIMENTAL
 
 config SM_MQTTC
 	bool "MQTT client support"
 	default y
+	select EXPERIMENTAL
 	select MQTT_LIB
 	select MQTT_LIB_TLS
 

doc/app/at_mqtt.rst

@@ -7,6 +7,10 @@ MQTT client AT commands
    :local:
    :depth: 2
 
+.. note::
+
+   These AT commands are `Experimental <Software maturity levels_>`_.
+
 This page describes the AT commands used to operate the MQTT client.
 
 .. note::

doc/app/at_nrfcloud.rst

@@ -5,6 +5,10 @@ nRF Cloud AT commands
    :local:
    :depth: 2
 
+.. note::
+
+   These AT commands are `Experimental <Software maturity levels_>`_.
+
 The page describes nRF Cloud-related AT commands.
 
 .. _SM_AT_NRFCLOUD:

doc/lib/sm_at_client.rst

@@ -7,6 +7,10 @@
    :local:
    :depth: 2
 
+.. note::
+
+   This library is `Experimental <Software maturity levels_>`_.
+
 The |SM| AT Client library exposes the AT command interface of the :ref:`serial_modem_app` for external devices over a serial interface.
 This library is intended for applications running on an external MCU that are connected to an nRF91 Series SiP through UART.
 

doc/links.txt

@@ -32,6 +32,7 @@
 .. _`create_application_types_freestanding`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/app_dev/create_application.html#create-application-types-freestanding
 .. _`sysbuild_enabled_ncs_configuring`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/app_dev/config_and_build/sysbuild/sysbuild_configuring_west.html#sysbuild-enabled-ncs-configuring
 .. _`cmake_options`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/app_dev/config_and_build/cmake/index.html#cmake-options
+.. _`Software maturity levels`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/releases_and_maturity/software_maturity.html
 
 .. _`ug_tfm_security_by_separation`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/security/tfm/processing_environments.html#ug-tfm-security-by-separation
 .. _`ug_tfm`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/security/tfm/index.html#ug-tfm

lib/sm_at_client/Kconfig

@@ -7,6 +7,7 @@
 menuconfig SM_AT_CLIENT
 	bool "Serial Modem AT Client Library"
 	depends on SERIAL
+	select EXPERIMENTAL
 	select UART_ASYNC_API
 	select RING_BUFFER
 	select UART_USE_RUNTIME_CONFIGURE