Additional benchmark-storage flags (#11004)

* Fix typos

* Enable overwriting handlebars template

* Optionally name json output or disable json altogether

* Don't write to json by default

* Include block id in handlebars output

* Include warmups for write benchmarks

* PR comments

* Drop unnecessary file extension

* Use more appropriate types

* Use more appropriate error message

* More use of more appropriate types

* Rework write benchmark warmups

* Run same benchmark for both read and write

substrate/utils/frame/benchmarking-cli/src/lib.rs

@@ -67,7 +67,7 @@ pub struct BenchmarkCmd {
 	#[clap(long = "json")]
 	pub json_output: bool,
 
-	/// Write the raw results in JSON format into the give file.
+	/// Write the raw results in JSON format into the given file.
 	#[clap(long, conflicts_with = "json-output")]
 	pub json_file: Option<PathBuf>,