Make subxt-core ready for publishing (#1508)

* Move Extrinsic decoding things to subxt_core and various tidy-ups

* A couple more fixes and fmt

* first pass moving tx logic to subxt_core

* cargo fmt

* fix wasm example

* clippy

* more clippy

* WIP Adding examples and such

* Move storage functionality more fully to subxt_core and nice examples for storage and txs

* Add example for events

* consistify how addresses/payloads are exposed in subxt-core and add runtime API fns

* Add runtime API core example

* fmt

* remove scale-info patch

* Add a little to the top level docs

* swap args around

* clippy

* cargo fmt and fix wasm-example

* doc fixes

* no-std-ise new subxt-core additions

* alloc, not core

* more no-std fixes

* A couple more fixes

* Add back extrinsic decode test

core/src/utils/mod.rs

@@ -1,4 +1,4 @@
-// Copyright 2019-2023 Parity Technologies (UK) Ltd.
+// Copyright 2019-2024 Parity Technologies (UK) Ltd.
 // This file is dual-licensed as Apache-2.0 or GPL-3.0.
 // see LICENSE for license details.
 
@@ -24,14 +24,11 @@ pub use account_id::AccountId32;
 pub use era::Era;
 pub use multi_address::MultiAddress;
 pub use multi_signature::MultiSignature;
+pub use primitive_types::{H160, H256, H512};
 pub use static_type::Static;
 pub use unchecked_extrinsic::UncheckedExtrinsic;
 pub use wrapper_opaque::WrapperKeepOpaque;
 
-// Used in codegen
-#[doc(hidden)]
-pub use primitive_types::{H160, H256, H512};
-
 /// Wraps an already encoded byte vector, prevents being encoded as a raw byte vector as part of
 /// the transaction payload
 #[derive(Clone, Debug, Eq, PartialEq, Ord, PartialOrd)]
@@ -74,7 +71,7 @@ unsafe impl<T> Sync for PhantomDataSendSync<T> {}
 /// as `BTreeMap` which allows us to easily swap the two during codegen.
 pub type KeyedVec<K, V> = Vec<(K, V)>;
 
-/// A unit marker struct signalling that some property is true
+/// A unit marker struct.
 pub struct Yes;
 
 /// A quick helper to encode some bytes to hex.