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/utils/frame/benchmarking-cli/src/pallet/writer.rs

@@ -90,7 +90,6 @@ struct CmdData {
 	repeat: u32,
 	lowest_range_values: Vec<u32>,
 	highest_range_values: Vec<u32>,
-	execution: String,
 	wasm_execution: String,
 	chain: String,
 	db_cache: u32,
@@ -425,7 +424,6 @@ pub(crate) fn write_results(
 		repeat: cmd.repeat,
 		lowest_range_values: cmd.lowest_range_values.clone(),
 		highest_range_values: cmd.highest_range_values.clone(),
-		execution: format!("{:?}", cmd.execution),
 		wasm_execution: cmd.wasm_method.to_string(),
 		chain: format!("{:?}", cmd.shared_params.chain),
 		db_cache: cmd.database_cache_size,