v0.50.0: Integrate frame-decode, redo storage APIs and break up Error. (#2100)

* WIP integrating new frame-decode and working out new storage APIS

* WIP: first pass adding new storage things to subxt-core

* Second pass over Address type and start impl in Subxt

* WIP new storage APIs

* WIP New storage APIs roughly completed, lots of errors still

* Remove PlainorMap enum; plain and map values now use same struct to simplify usage

* Begin 'fixing' errors

* WIP splitting errors and tidying payload/address traits

* Get subxt-core compiling

* Small fixes in subxt-core and remove metadata mod

* subxt-core: cargo check --all-targets passes

* Fix test

* WIP starting to update subxt from subxt-core changes

* WIP splitting up subxt errors into smaller variants

* WIP errors: add DispatchError errors

* Port new Storage APIs to subxt-core

* cargo check -p subxt passes

* Quick-fix errors in subxt-cli (explore subcommand)

* fmt

* Finish fixing codegen up and start fixing examples

* get Subxt examples compiling and bytes_at for constants

* Add some arcs to limit lifetimes in subxt/subxt-core storage APIs

* A little Arcing to allow more method chaining in Storage APIs, aligning with Subxt

* Update codegen test

* cargo check --all-targets passing

* cargo check --features 'unstable-light-client' passing

* clippy

* Remove unused dep in subxt

* use published frame-decode

* fix wasm-example

* Add new tx extension to fix daily tests

* Remove unused subxt_core::dynamic::DecodedValue type

* Update book to match changes

* Update docs to fix more broken bits

* Add missing docs

* fmt

* allow larger result errs for now

* Add missing alloc imports in subxt-core

* Fix doc tests and fix bug getting constant info

* Fix V14 -> Metadata transform for storage & constants

* Fix parachain example

* Fix FFI example

* BlockLength decodes t ostruct, not u128

* use fetch/iter shorthands rather than entry in most storage tests

* Fix some integration tests

* Fix Runtime codegen tests

* Expose the dynamic custom_value selecter and use in a UI test

* Update codegen metadata

* Tidy CLI storage query and support (str,str) as a storage address

* Add (str,str) as valid constant address too

* Show string tuple in constants example

* Via the magic of traits, avoid needing any clones of queries/addresses and accept references to them

* clippy

subxt/examples/runtime_apis_dynamic.rs

@@ -1,5 +1,5 @@
 #![allow(missing_docs)]
-use subxt::dynamic::Value;
+use subxt::utils::AccountId32;
 use subxt::{OnlineClient, config::PolkadotConfig};
 use subxt_signer::sr25519::dev;
 
@@ -8,14 +8,14 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     // Create a client to use:
     let api = OnlineClient::<PolkadotConfig>::new().await?;
 
-    // Create a dynamically runtime API payload that calls the
-    // `AccountNonceApi_account_nonce` function.
-    let account = dev::alice().public_key();
-    let runtime_api_call = subxt::dynamic::runtime_api_call(
-        "AccountNonceApi",
-        "account_nonce",
-        vec![Value::from_bytes(account)],
-    );
+    // Create a "dynamic" runtime API payload that calls the
+    // `AccountNonceApi_account_nonce` function. We could use the
+    // `scale_value::Value` type as output, and a vec of those as inputs,
+    // but since we know the input + return types we can pass them directly.
+    // There is one input argument, so the inputs are a tuple of one element.
+    let account: AccountId32 = dev::alice().public_key().into();
+    let runtime_api_call =
+        subxt::dynamic::runtime_api_call::<_, u64>("AccountNonceApi", "account_nonce", (account,));
 
     // Submit the call to get back a result.
     let nonce = api
@@ -25,6 +25,6 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         .call(runtime_api_call)
         .await?;
 
-    println!("Account nonce: {:#?}", nonce.to_value());
+    println!("Account nonce: {:#?}", nonce);
     Ok(())
 }