Adds support for inspecting a hex encoded public key (#7344)

* Adds support for inspecting a hex encoded public key

This adds support for inspecting hex encoded public keys to subkey. The
command looks like:

`subkey inspect --public 0xPUBLICHEX`

* Update client/cli/src/commands/utils.rs

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>

substrate/client/cli/src/commands/mod.rs

@@ -30,7 +30,7 @@ mod generate_node_key;
 mod generate;
 mod insert;
 mod inspect_node_key;
-mod inspect;
+mod inspect_key;
 mod key;
 pub mod utils;
 
@@ -44,7 +44,7 @@ pub use self::{
 	sign::SignCmd,
 	generate::GenerateCmd,
 	insert::InsertCmd,
-	inspect::InspectKeyCmd,
+	inspect_key::InspectKeyCmd,
 	generate_node_key::GenerateNodeKeyCmd,
 	inspect_node_key::InspectNodeKeyCmd,
 	key::KeySubcommand,