feat: update event mechanism

add event type local and global, clients have to use contractID and topic to subscribe local event; allow clients to subscribe topics (will not be recorded)

build.gradle

@@ -57,8 +57,6 @@ project(':router-backend') {
 }
 
 
-
-
 project(":gmhelper") {
     group = projectIds.group
     version = projectIds.version
@@ -68,7 +66,6 @@ project(":gmhelper") {
 }
 
 
-
 tasks.withType(JavaCompile) {
     options.compilerArgs << '-Xlint:none'
     options.compilerArgs << '-Xlint:deprecation' << "-Werror"