Feat/long running sockets (#2090)

* wip: Working on sockets, but can't connect?

* simplify unix socket connection

* wip: Get responses back from the server at least once.

* WIP: Get the sockets working'

* feat: Sockets can start/ stop/ config/ properites/ uninstall

* fix: Restart services

* Fix: Sockets work and can stop main and not kill client

Co-authored-by: Aiden McClelland <me@drbonez.dev>

backend/src/s9pk/reader.rs

@@ -231,16 +231,6 @@ impl<R: AsyncRead + AsyncSeek + Unpin + Send + Sync> S9pkReader<R> {
             &validated_image_ids,
         )?;
 
-        #[cfg(feature = "js_engine")]
-        if man.containers.is_some()
-            || matches!(man.main, crate::procedure::PackageProcedure::Script(_))
-        {
-            return Err(Error::new(
-                eyre!("Right now we don't support the containers and the long running main"),
-                crate::ErrorKind::ValidateS9pk,
-            ));
-        }
-
         if man.containers.is_some()
             && matches!(man.main, crate::procedure::PackageProcedure::Docker(_))
         {