Add highlight rule manager

...chku/libquassel/quassel/syncables/HighlightRuleManager.kt

...kuschku/libquassel/quassel/syncables/IgnoreListManager.kt

...sel/quassel/syncables/interfaces/IHighlightRuleManager.kt

...uassel/quassel/syncables/interfaces/IIgnoreListManager.kt

...quassel/quassel/syncables/interfaces/invokers/Invokers.kt

lib/src/main/java/de/kuschku/libquassel/session/ISession.kt

lib/src/main/java/de/kuschku/libquassel/session/Session.kt