Ajout du node ID dans le start Task

Signed-off-by: quentin quentin.capy@rte-france.com

Please check if the PR fulfills these requirements (please use '[x]' to check the checkboxes, or submit the PR and then click the checkboxes)

[x] The commit message follows our guidelines
[ ] Tests for the changes have been added (for bug fixes / features)
[ ] Docs have been added / updated (for bug fixes / features)

Does this PR already have an issue describing the problem ? If so, link to this issue using '#XXX' and skip the rest issue from Imagrid team who need the node id of a task to link the task notification to the afs node

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...) A new field is available on StartTaskEvent to get the nodeId link to this task

What is the current behavior? (You can also link to an open issue here) no link possible between task and afs node with task notification

What is the new behavior (if this is a feature change)? the provided nodeID link the task and afs node during startTask notification

Does this PR introduce a breaking change or deprecate an API? If yes, check the following:

[ ] The Breaking Change or Deprecated label has been added
[ ] The migration guide has been updated in the github wiki (What changes might users need to make in their application due to this PR?)

Other information: there is no breaking change on the backend part. All listener should check if they check explicitly all tag of this event "StartTaskEvent" in order to add the possibility to find the nodeId (if any of the questions/checkboxes don't apply, please delete them entirely)

powsybl / powsybl-afs

Ajout du node ID dans le start Task #99