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/minimal/node/src/cli.rs

@@ -0,0 +1,81 @@
+// This file is part of Substrate.
+
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use sc_cli::RunCmd;
+
+#[derive(Debug, Clone)]
+pub enum Consensus {
+	ManualSeal(u64),
+	InstantSeal,
+}
+
+impl std::str::FromStr for Consensus {
+	type Err = String;
+
+	fn from_str(s: &str) -> Result<Self, Self::Err> {
+		Ok(if s == "instant-seal" {
+			Consensus::InstantSeal
+		} else if let Some(block_time) = s.strip_prefix("manual-seal-") {
+			Consensus::ManualSeal(block_time.parse().map_err(|_| "invalid block time")?)
+		} else {
+			return Err("incorrect consensus identifier".into())
+		})
+	}
+}
+
+#[derive(Debug, clap::Parser)]
+pub struct Cli {
+	#[command(subcommand)]
+	pub subcommand: Option<Subcommand>,
+
+	#[clap(long, default_value = "manual-seal-3000")]
+	pub consensus: Consensus,
+
+	#[clap(flatten)]
+	pub run: RunCmd,
+}
+
+#[derive(Debug, clap::Subcommand)]
+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),
+
+	/// Db meta columns information.
+	ChainInfo(sc_cli::ChainInfoCmd),
+}