New substrate signing API, srml -> paint rename (#33)

* Update jsonrpc to align with substrate

* Update to new substrate signing

* Default to MultiSignature

* Add missing event type sizes

* Rename TakeFees check to ChargeTransactionPayment

* Fix extrinsic Signature

* Ignore AuthorityList type size

* Rename srml to paint (#32)

src/rpc.rs

@@ -21,7 +21,7 @@ use crate::{
         RuntimeEvent,
     },
     metadata::Metadata,
-    srml::{
+    paint::{
         balances::Balances,
         system::System,
     },
@@ -161,9 +161,9 @@ use txpool::watcher::Status;
 
 use crate::{
     events::RawEvent,
-    srml::system::SystemEvent,
+    paint::system::SystemEvent,
 };
-use srml_system::Phase;
+use paint_system::Phase;
 
 type MapClosure<T> = Box<dyn Fn(T) -> T + Send>;
 pub type MapStream<T> = stream::Map<TypedSubscriptionStream<T>, MapClosure<T>>;