Support for VIRTUAL_NODE_V1 gateway feature flag

Support for VIRTUAL_NODE_V1 gateway feature flag

Rename helper functions for write only config fields

Rename helper functions for write only config fields

Update protobuf dependency to next major version

LG-75 Add get_config_data_item

This adds support for GetConfigurationDataItemReq and
GetConfigurationDataItemResp messages for getting a single item.

Fix protobuf dependency version

Protobuf runtime version should always be newer than the protoc version
used. Setting a fixed protoc version in the github action, and setting
the required protobuf version to be at least the same as the protoc
version.

More info:
https://protobuf.dev/support/cross-version-runtime-guarantee/

Fix protobuf dependency version

Protobuf runtime version should always be newer than the protoc version
used. Setting a fixed protoc version in the github action, and setting
the required protobuf version to be at least the same as the protoc
version.

More info:
https://protobuf.dev/support/cross-version-runtime-guarantee/

Add missing gateway result codes and add tests for it

The test verifies that all of the error codes defined in the currently
used protobuf definition can be converted to the internal
GateayResultCode enum (in case some of them are forgotten to be added
here).

Upload scratchpad as chunk

* Upgrade prtotobuf
* Add max size to gateway info and event
* Add chunk info