Feature/UI sideload (#2658)

* ui sideloading

* remove subtlecrypto import

* fix parser

* misc fixes

* allow docker pull during compat conversion

core/startos/src/registry/mod.rs

@@ -1,5 +1,4 @@
 use std::collections::{BTreeMap, BTreeSet};
-use std::net::SocketAddr;
 
 use axum::Router;
 use futures::future::ready;