Repot all templates into a single directory (#3460)

The first step towards
https://github.com/paritytech/polkadot-sdk/issues/3155

Brings all templates under the following structure

```
templates
|   parachain
|   |   polkadot-launch
|   |   runtime              --> parachain-template-runtime
|   |   pallets              --> pallet-parachain-template
|   |   node                 --> parachain-template-node
|   minimal
|   |   runtime              --> minimal-template-runtime
|   |   pallets              --> pallet-minimal-template
|   |   node                 --> minimal-template-node
|   solochain
|   |   runtime              --> solochain-template-runtime
|   |   pallets              --> pallet-template (the naming is not consistent here)
|   |   node                 --> solochain-template-node
```

The only note-worthy changes in this PR are: 

- More `Cargo.toml` fields are forwarded to use the one from the
workspace.
- parachain template now has weights and benchmarks
- adds a shell pallet to the minimal template
- remove a few unused deps 


A list of possible follow-ups: 

- [ ] Unify READMEs, create a parent README for all
- [ ] remove references to `docs.substrate.io` in templates
- [ ] make all templates use `#[derive_impl]`
- [ ] update and unify all licenses
- [ ] Remove polkadot launch, use
https://github.com/paritytech/polkadot-sdk/blob/35349df993ea2e7c4769914ef5d199e787b23d4c/cumulus/zombienet/examples/small_network.toml
instead.

templates/solochain/node/src/cli.rs

@@ -0,0 +1,51 @@
+use sc_cli::RunCmd;
+
+#[derive(Debug, clap::Parser)]
+pub struct Cli {
+	#[command(subcommand)]
+	pub subcommand: Option<Subcommand>,
+
+	#[clap(flatten)]
+	pub run: RunCmd,
+}
+
+#[derive(Debug, clap::Subcommand)]
+#[allow(clippy::large_enum_variant)]
+pub enum Subcommand {
+	/// Key management cli utilities
+	#[command(subcommand)]
+	Key(sc_cli::KeySubcommand),
+
+	/// Build a chain specification.
+	BuildSpec(sc_cli::BuildSpecCmd),
+
+	/// Validate blocks.
+	CheckBlock(sc_cli::CheckBlockCmd),
+
+	/// Export blocks.
+	ExportBlocks(sc_cli::ExportBlocksCmd),
+
+	/// Export the state of a given block into a chain spec.
+	ExportState(sc_cli::ExportStateCmd),
+
+	/// Import blocks.
+	ImportBlocks(sc_cli::ImportBlocksCmd),
+
+	/// Remove the whole chain.
+	PurgeChain(sc_cli::PurgeChainCmd),
+
+	/// Revert the chain to a previous state.
+	Revert(sc_cli::RevertCmd),
+
+	/// Sub-commands concerned with benchmarking.
+	#[command(subcommand)]
+	Benchmark(frame_benchmarking_cli::BenchmarkCmd),
+
+	/// Try-runtime has migrated to a standalone CLI
+	/// (<https://github.com/paritytech/try-runtime-cli>). The subcommand exists as a stub and
+	/// deprecation notice. It will be removed entirely some time after Janurary 2024.
+	TryRuntime,
+
+	/// Db meta columns information.
+	ChainInfo(sc_cli::ChainInfoCmd),
+}