Removal of execution strategies (#14387)

* Start

* More work!

* Moar

* More changes

* More fixes

* More worrk

* More fixes

* More fixes to make it compile

* Adds `NoOffchainStorage`

* Pass the extensions

* Small basti making small progress

* Fix merge errors and remove `ExecutionContext`

* Move registration of `ReadRuntimeVersionExt` to `ExecutionExtension`

Instead of registering `ReadRuntimeVersionExt` in `sp-state-machine` it is moved to
`ExecutionExtension` which provides the default extensions.

* Fix compilation

* Register the global extensions inside runtime api instance

* Fixes

* Fix `generate_initial_session_keys` by passing the keystore extension

* Fix the grandpa tests

* Fix more tests

* Fix more tests

* Don't set any heap pages if there isn't an override

* Fix small fallout

* FMT

* Fix tests

* More tests

* Offchain worker custom extensions

* More fixes

* Make offchain tx pool creation reusable

Introduces an `OffchainTransactionPoolFactory` for creating offchain transactions pools that can be
registered in the runtime externalities context. This factory will be required for a later pr to
make the creation of offchain transaction pools easier.

* Fixes

* Fixes

* Set offchain transaction pool in BABE before using it in the runtime

* Add the `offchain_tx_pool` to Grandpa as well

* Fix the nodes

* Print some error when using the old warnings

* Fix merge issues

* Fix compilation

* Rename `babe_link`

* Rename to `offchain_tx_pool_factory`

* Cleanup

* FMT

* Fix benchmark name

* Fix `try-runtime`

* Remove `--execution` CLI args

* Make clippy happy

* Forward bls functions

* Fix docs

* Update UI tests

* Update client/api/src/execution_extensions.rs

Co-authored-by: Michal Kucharczyk <1728078+michalkucharczyk@users.noreply.github.com>

* Apply suggestions from code review

Co-authored-by: Koute <koute@users.noreply.github.com>

* Update client/cli/src/params/import_params.rs

Co-authored-by: Koute <koute@users.noreply.github.com>

* Update client/api/src/execution_extensions.rs

Co-authored-by: Koute <koute@users.noreply.github.com>

* Pass the offchain storage to the MMR RPC

* Update client/api/src/execution_extensions.rs

Co-authored-by: Sebastian Kunert <skunert49@gmail.com>

* Review comments

* Fixes

---------

Co-authored-by: Michal Kucharczyk <1728078+michalkucharczyk@users.noreply.github.com>
Co-authored-by: Koute <koute@users.noreply.github.com>
Co-authored-by: Sebastian Kunert <skunert49@gmail.com>

substrate/primitives/application-crypto/test/src/ecdsa.rs

@@ -16,13 +16,13 @@
 // limitations under the License.
 
 //! Integration tests for ecdsa
-use sp_api::ProvideRuntimeApi;
+use sp_api::{ApiExt, ProvideRuntimeApi};
 use sp_application_crypto::ecdsa::AppPair;
 use sp_core::{
 	crypto::{ByteArray, Pair},
 	testing::ECDSA,
 };
-use sp_keystore::{testing::MemoryKeystore, Keystore};
+use sp_keystore::{testing::MemoryKeystore, Keystore, KeystoreExt};
 use std::sync::Arc;
 use substrate_test_runtime_client::{
 	runtime::TestAPI, DefaultTestClientBuilderExt, TestClientBuilder, TestClientBuilderExt,
@@ -31,9 +31,12 @@ use substrate_test_runtime_client::{
 #[test]
 fn ecdsa_works_in_runtime() {
 	let keystore = Arc::new(MemoryKeystore::new());
-	let test_client = TestClientBuilder::new().set_keystore(keystore.clone()).build();
-	let (signature, public) = test_client
-		.runtime_api()
+	let test_client = TestClientBuilder::new().build();
+
+	let mut runtime_api = test_client.runtime_api();
+	runtime_api.register_extension(KeystoreExt::new(keystore.clone()));
+
+	let (signature, public) = runtime_api
 		.test_ecdsa_crypto(test_client.chain_info().genesis_hash)
 		.expect("Tests `ecdsa` crypto.");