Benchmarks Writer CLI (#6567)

* initial mockup

* add and wipe

* track writes

* start to add to pipeline

* return all reads/writes

* Log reads and writes from bench db

* causes panic

* Allow multiple commits

* commit before ending benchmark

* doesn't work???

* fix

* Update lib.rs

* switch to struct for `BenchmarkResults`

* add to output

* fix test

* line width

* @kianenigma review

* Add Whitelist to DB Tracking in Benchmarks Pipeline (#6405)

* hardcoded whitelist

* Add whitelist to pipeline

* Remove whitelist pipeline from CLI, add to runtime

* clean-up unused db initialized whitelist

* Add regression analysis to DB Tracking (#6475)

* Add selector

* add tests

* debug formatter for easy formula

* initial idea

* use all benchmarks

* broken

* working without trait

* Make work for multiple pallets

* Fix merge issues

* writer appends to file

* implement () for balances weight trait

* update name of trait

* Weights to WeightInfo

* auto trait writer

* Heap pages are configurable

* clean out runtime changes

* more clean up

* Fix string generation

* Update comments

* Update bin/node/runtime/src/lib.rs

Co-authored-by: arkpar <arkady.paronyan@gmail.com>

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

@@ -55,7 +55,7 @@ impl BenchmarkCmd {
 		let state = BenchmarkingState::<BB>::new(genesis_storage, cache_size)?;
 		let executor = NativeExecutor::<ExecDispatch>::new(
 			wasm_method,
-			None, // heap pages
+			self.heap_pages,
 			2, // The runtime instances cache size.
 		);
 
@@ -89,6 +89,16 @@ impl BenchmarkCmd {
 		let results = <std::result::Result<Vec<BenchmarkBatch>, String> as Decode>::decode(&mut &result[..])
 			.map_err(|e| format!("Failed to decode benchmark results: {:?}", e))?;
 
+		if self.output {
+			if self.weight_trait {
+				let mut file = crate::writer::open_file("traits.rs")?;
+				crate::writer::write_trait(&mut file, results.clone())?;
+			} else {
+				let mut file = crate::writer::open_file("benchmarks.rs")?;
+				crate::writer::write_results(&mut file, results.clone())?;
+			}
+		}
+
 		match results {
 			Ok(batches) => for batch in batches.into_iter() {
 				// Print benchmark metadata