seal_reentrant_count returns contract reentrant count (#12695)

* Add logic, test, broken benchmark

* account_entrance_count

* Addressing comments

* Address @agryaznov's comments

* Add test for account_entrance_count, fix ci

* Cargo fmt

* Fix tests

* Fix tests

* Remove delegated call from test, address comments

* Minor fixes and indentation in wat files

* Update test for account_entrance_count

* Update reentrant_count_call test

* Delegate call test

* Cargo +nightly fmt

* Address comments

* Update reentrant_count_works test

* Apply weights diff

* Add fixture descriptions

* Update comments as suggested

* Update reentrant_count_call test to use seal_address

* add missing code

* cargo fmt

* account_entrance_count -> account_reentrance_count

* fix tests

* fmt

* normalize signatures

Co-authored-by: yarikbratashchuk <yarik.bratashchuk@gmail.com>

substrate/frame/contracts/src/schedule.rs

@@ -423,6 +423,12 @@ pub struct HostFnWeights<T: Config> {
 	/// Weight of calling `seal_ecdsa_to_eth_address`.
 	pub ecdsa_to_eth_address: u64,
 
+	/// Weight of calling `seal_reentrant_count`.
+	pub reentrant_count: u64,
+
+	/// Weight of calling `seal_account_reentrance_count`.
+	pub account_reentrance_count: u64,
+
 	/// The type parameter is used in the default implementation.
 	#[codec(skip)]
 	pub _phantom: PhantomData<T>,
@@ -659,6 +665,8 @@ impl<T: Config> Default for HostFnWeights<T> {
 			hash_blake2_128_per_byte: cost_byte_batched!(seal_hash_blake2_128_per_kb),
 			ecdsa_recover: cost_batched!(seal_ecdsa_recover),
 			ecdsa_to_eth_address: cost_batched!(seal_ecdsa_to_eth_address),
+			reentrant_count: cost_batched!(seal_reentrant_count),
+			account_reentrance_count: cost_batched!(seal_account_reentrance_count),
 			_phantom: PhantomData,
 		}
 	}