New manipulation get component sw version (#85)

Add manipulation GetComponentSwVersion for devices

# Checklist

The following aspects have been respected by the author of this pull
request, confirmed by both pull request assignee **and** reviewer:

* Changelog update (necessity checked and entry added or not added
respectively)
  * [x] Pull Request Assignee
  * [x] Reviewer
* README update (necessity checked and entry added or not added
respectively)
  * [x] Pull Request Assignee
  * [x] Reviewer

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - manipulation GetAvailableDeviceMetaData for device
 - manipulation AssociateValidateAndChangeIdentificationOfPatientOrLocationContextState for contexts
+- manipulation GetComponentSwVersion for devices
 - manipulation ProvideInformationAboutLastCalibration for devices
 - manipulation ProvideInformationAboutNextCalibration for devices
 - manipulation SetSystemContextActivationStateAndContextAssociation for combined settings

src/t2iapi/device/device_responses.proto

@@ -37,4 +37,12 @@ Response containing the available device metadata.
 message AvailableDeviceMetaDataResponse {
     BasicResponse status = 1;
     t2iapi.biceps.MetaDataMsg meta_data = 2; // available device metadata
-}
+}
+
+/*
+Response containing the software version of the requested pm:AbstractDeviceComponentDescriptor handle when supported.
+ */
+message GetComponentSwVersionResponse {
+    BasicResponse status = 1;    // status of the rpc
+    string software_version = 2; // Software version of the requested device component
+}

src/t2iapi/device/service.proto

@@ -143,4 +143,11 @@ service DeviceService {
     user's opinion, must be present for this device.
      */
     rpc GetAvailableDeviceMetaData(BasicHandleRequest) returns (AvailableDeviceMetaDataResponse);
+
+    /*
+    Get the software version of the requested pm:AbstractDeviceComponentDescriptor handle if it is representing
+    a component with a software version.
+     */
+    rpc GetComponentSwVersion (BasicHandleRequest)
+        returns (t2iapi.device.GetComponentSwVersionResponse);
 }