Feature/callbacks (#2678)

* wip

* initialize callbacks

* wip

* smtp

* list_service_interfaces

* wip

* wip

* fix domains

* fix hostname handling in NetService

* misc fixes

* getInstalledPackages

* misc fixes

* publish v6 lib

* refactor service effects

* fix import

* fix container runtime

* fix tests

* apply suggestions from review

core/startos/src/net/dns.rs

@@ -34,7 +34,7 @@ struct Resolver {
 impl Resolver {
     async fn resolve(&self, name: &Name) -> Option<Vec<Ipv4Addr>> {
         match name.iter().next_back() {
-            Some(b"embassy") => {
+            Some(b"embassy") | Some(b"startos") => {
                 if let Some(pkg) = name.iter().rev().skip(1).next() {
                     if let Some(ip) = self.services.read().await.get(&Some(
                         std::str::from_utf8(pkg)