multiple fullstack nits/cleanups before release (#4852)

* feat: `:arg` syntax for serverfn

* add better decode/encode verify message

* allow catch-all query args

* add rebind

* implement websocket frames for `Streaming`

* fix lazy init

* wip... serverfnstate

* wip...

* wip: serverfns require Send/Sync, let's fix that

* wip...

* small cleanup

* fix hang by actually spawning the tokio task

* clippy

* fix parameter catchall binding

* fix lychee

* doc tests

Cargo.toml

@@ -703,6 +703,11 @@ name = "flat_router"
 path = "examples/06-routing/flat_router.rs"
 doc-scrape-examples = true
 
+[[example]]
+name = "query_params"
+path = "examples/07-fullstack/query_params.rs"
+doc-scrape-examples = true
+
 [[example]]
 name = "server_functions"
 path = "examples/07-fullstack/server_functions.rs"