Move serai-client off serai-runtime, MIT licensing it

Uses a full-fledged serai-abi to do so.

Removes use of UncheckedExtrinsic as a pointlessly (for us) length-prefixed
block with a more complicated signing algorithm than advantageous.

In the future, we should considering consolidating the various primitives
crates. I'm not convinced we benefit from one primitives crate per pallet.

coordinator/src/tributary/dkg_removal.rs

@@ -19,7 +19,7 @@ use frost::{
 use frost_schnorrkel::Schnorrkel;
 
 use serai_client::{
-  Public,
+  Public, SeraiAddress,
   validator_sets::primitives::{musig_context, remove_participant_message},
 };
 
@@ -190,7 +190,7 @@ impl DkgRemoval {
     preprocesses: HashMap<Participant, Vec<u8>>,
     removed: [u8; 32],
     mut shares: HashMap<Participant, Vec<u8>>,
-  ) -> Result<(Vec<Public>, [u8; 64]), Participant> {
+  ) -> Result<(Vec<SeraiAddress>, [u8; 64]), Participant> {
     // TODO: Remove this ugly blob
     let shares = {
       let mut shares_participants = shares.keys().cloned().collect::<Vec<_>>();
@@ -213,7 +213,7 @@ impl DkgRemoval {
       new_shares
     };
 
-    let mut signers = shares.keys().cloned().map(Public).collect::<Vec<_>>();
+    let mut signers = shares.keys().cloned().map(SeraiAddress).collect::<Vec<_>>();
     signers.sort();
 
     let machine = Self::share_internal(spec, key, attempt, preprocesses, removed)

coordinator/src/tributary/handle.rs

@@ -10,7 +10,7 @@ use frost::dkg::Participant;
 
 use scale::{Encode, Decode};
 use serai_client::{
-  Public, Signature,
+  Public, SeraiAddress, Signature,
   validator_sets::primitives::{ValidatorSet, KeyPair},
   SeraiValidatorSets,
 };
@@ -174,7 +174,7 @@ pub(crate) async fn handle_application_tx<
   D: Db,
   Pro: Processors,
   FPst: Future<Output = ()>,
-  PST: Clone + Fn(ValidatorSet, PstTxType, Vec<u8>) -> FPst,
+  PST: Clone + Fn(ValidatorSet, PstTxType, serai_client::Transaction) -> FPst,
   FPtt: Future<Output = ()>,
   PTT: Clone + Fn(Transaction) -> FPtt,
   FRid: Future<Output = ()>,
@@ -734,7 +734,7 @@ pub(crate) async fn handle_application_tx<
 
           let tx = serai_client::SeraiValidatorSets::remove_participant(
             spec.set().network,
-            Public(data.plan),
+            SeraiAddress(data.plan),
             signers,
             Signature(signature),
           );

coordinator/src/tributary/scanner.rs

@@ -55,7 +55,7 @@ async fn handle_block<
   D: Db,
   Pro: Processors,
   FPst: Future<Output = ()>,
-  PST: Clone + Fn(ValidatorSet, PstTxType, Vec<u8>) -> FPst,
+  PST: Clone + Fn(ValidatorSet, PstTxType, serai_client::Transaction) -> FPst,
   FPtt: Future<Output = ()>,
   PTT: Clone + Fn(Transaction) -> FPtt,
   FRid: Future<Output = ()>,
@@ -148,7 +148,7 @@ pub(crate) async fn handle_new_blocks<
   D: Db,
   Pro: Processors,
   FPst: Future<Output = ()>,
-  PST: Clone + Fn(ValidatorSet, PstTxType, Vec<u8>) -> FPst,
+  PST: Clone + Fn(ValidatorSet, PstTxType, serai_client::Transaction) -> FPst,
   FPtt: Future<Output = ()>,
   PTT: Clone + Fn(Transaction) -> FPtt,
   FRid: Future<Output = ()>,