Metadata difference command (#1015)

* diffing pallets and runtime apis

* print diff

* clippy fix and format

* change formatting

* fmt

* diff working with storage details

* fix diff

* cargo fmt

* remove printing of node

* change strings

* handle parsing differently

* clippy fix

* cargo fmt

* more abstraction

* clippy fix and fmt

* add unit test and ordering

* fix small issue

cli/src/commands/explore/mod.rs

@@ -80,7 +80,6 @@ pub enum PalletSubcommand {
     Storage(StorageSubcommand),
 }
 
-/// cargo run -- explore --file=../artifacts/polkadot_metadata.scale
 pub async fn run(opts: Opts, output: &mut impl std::io::Write) -> color_eyre::Result<()> {
     // get the metadata
     let bytes = opts.file_or_url.fetch().await?;