Support constructing and submitting V5 transactions (#1931)

* TransactionExtensions basic support for V5 VerifySignature and renames

* WIP: subxt-core v5 transaction support

* Subxt to support V5 extrinsics

* WIP tests failing with wsm trap error

* Actually encode mortality to fix tx encode issue

* fmt

* rename to sign_with_account_and_signature

* Add explicit methods for v4 and v5 ext construction

* clippy

* fix wasm example and no mut self where not needed

* fix doc example

* another doc fix

* Add tests for tx encoding and fix v5 encode issue

* add copyright and todo

* refactor APIs to have clear v4/v5 split in core and slightly nicer split in subxt proper

* rename Partial/SubmittableExtrinsic to *Transaction

* Remove SignerT::address since it's not needed

* doc fixes

* fmt

* doc fixes

* Fix comment number

* Clarify panic behaviour of inject_signature

* fmt

examples/wasm-example/src/routes/signing.rs

@@ -6,7 +6,7 @@ use subxt::{OnlineClient, PolkadotConfig};
 use subxt::config::DefaultExtrinsicParamsBuilder;
 use subxt::ext::codec::{Decode, Encode};
 use subxt::tx::Payload as _;
-use subxt::tx::SubmittableExtrinsic;
+use subxt::tx::SubmittableTransaction;
 use subxt::utils::{AccountId32, MultiSignature};
 
 use crate::services::{extension_signature_for_extrinsic, get_accounts, polkadot, Account};
@@ -51,7 +51,7 @@ pub enum SigningStage {
 
 pub enum SubmittingStage {
     Initial {
-        signed_extrinsic: SubmittableExtrinsic<PolkadotConfig, OnlineClient<PolkadotConfig>>,
+        signed_extrinsic: SubmittableTransaction<PolkadotConfig, OnlineClient<PolkadotConfig>>,
     },
     Submitting,
     Success {
@@ -70,7 +70,7 @@ pub enum Message {
     SignWithAccount(usize),
     ReceivedSignature(
         MultiSignature,
-        SubmittableExtrinsic<PolkadotConfig, OnlineClient<PolkadotConfig>>,
+        SubmittableTransaction<PolkadotConfig, OnlineClient<PolkadotConfig>>,
     ),
     SubmitSigned,
     ExtrinsicFinalized {
@@ -166,15 +166,15 @@ impl Component for SigningExamplesComponent {
                         let params = DefaultExtrinsicParamsBuilder::new()
                             .nonce(account_nonce)
                             .build();
-                        let Ok(partial_signed) =
-                            api.tx().create_partial_signed_offline(&remark_call, params)
+                        let Ok(mut partial_signed) =
+                            api.tx().create_partial_offline(&remark_call, params)
                         else {
-                            return Message::Error(anyhow!("PartialExtrinsic creation failed"));
+                            return Message::Error(anyhow!("PartialTransaction creation failed"));
                         };
 
                         // Apply the signature
                         let signed_extrinsic = partial_signed
-                            .sign_with_address_and_signature(&account_id.into(), &multi_signature);
+                            .sign_with_account_and_signature(&account_id, &multi_signature);
 
                         // check the TX validity (to debug in the js console if the extrinsic would work)
                         let dry_res = signed_extrinsic.validate().await;
@@ -394,7 +394,7 @@ impl Component for SigningExamplesComponent {
 }
 
 async fn submit_wait_finalized_and_get_extrinsic_success_event(
-    extrinsic: SubmittableExtrinsic<PolkadotConfig, OnlineClient<PolkadotConfig>>,
+    extrinsic: SubmittableTransaction<PolkadotConfig, OnlineClient<PolkadotConfig>>,
 ) -> Result<polkadot::system::events::ExtrinsicSuccess, anyhow::Error> {
     let events = extrinsic
         .submit_and_watch()

examples/wasm-example/src/services.rs

@@ -140,7 +140,7 @@ pub async fn extension_signature_for_extrinsic(
     let signed_extensions: Vec<String> = api
         .metadata()
         .extrinsic()
-        .signed_extensions()
+        .transaction_extensions()
         .iter()
         .map(|e| e.identifier().to_string())
         .collect();