Update the minimal template to stable2412 (#21)

This synchronizes the template to the stable2412 branch.

---------

Signed-off-by: Iulian Barbu <iulian.barbu@parity.io>
Co-authored-by: iulianbarbu <14218860+iulianbarbu@users.noreply.github.com>
Co-authored-by: Iulian Barbu <iulian.barbu@parity.io>

node/src/cli.rs

@@ -21,6 +21,7 @@ use polkadot_sdk::{sc_cli::RunCmd, *};
 pub enum Consensus {
 	ManualSeal(u64),
 	InstantSeal,
+	None,
 }
 
 impl std::str::FromStr for Consensus {
@@ -31,6 +32,8 @@ impl std::str::FromStr for Consensus {
 			Consensus::InstantSeal
 		} else if let Some(block_time) = s.strip_prefix("manual-seal-") {
 			Consensus::ManualSeal(block_time.parse().map_err(|_| "invalid block time")?)
+		} else if s.to_lowercase() == "none" {
+			Consensus::None
 		} else {
 			return Err("incorrect consensus identifier".into());
 		})