Initialize AssignForwardingHandler and KeyStoreHandler

Initializes the AssignForwardingHandler, aswell as the KeyStoreHandler correctly. Additionally key store Add and Delete methods have been extended to use the internal EventBus.

We should also remove all unnecessary parameter forwarding of an eventBus and use the NewEventBus approach, introduced in this MR.

go.mod

@@ -27,7 +27,7 @@ require (
 	buf.build/gen/go/bufbuild/protovalidate/protocolbuffers/go v1.33.0-20240221180331-f05a6f4403ce.1 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect
-	github.com/golang/glog v1.2.2 // indirect
+	github.com/golang/glog v1.2.4 // indirect
 	github.com/golang/protobuf v1.5.4 // indirect
 	github.com/google/go-cmp v0.6.0 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect