first try to generate messages from events

todo:

- add subject function to Event interface
- implement interface on derived event classes
- make events translatable

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

messages/build.gradle.kts

@@ -1,6 +1,7 @@
 description = "Umbrella : Message subsystem"
 
 dependencies{
+    implementation(project(":bus"))
     implementation(project(":core"))
     implementation("com.sun.mail:jakarta.mail:2.0.1")
     implementation("org.bitbucket.b_c:jose4j:0.9.6")