Adds `--finalize-delay-sec` cli argument, based on the great work by
@shunsukew at https://github.com/inkdevhub/swanky-node/pull/61.

Manual testing by starting node with/without option, along with example
contract upload:
```shell
# build example contract
cargo contract build --manifest-path=../ink-examples/erc20/Cargo.toml

# start node
cargo run

# upload contract
cargo contract upload --suri //Alice --execute --manifest-path=../ink-examples/erc20/Cargo.toml
# check finalized head remains at genesis
sleep 1
test $(curl -sH "Content-Type: application/json" -d '{"id":"1", "jsonrpc":"2.0", "method": "chainHead_unstable_genesisHash", "params":[]}' http://localhost:9944 | jq .result) \
  = $(curl -sH "Content-Type: application/json" -d '{"id":"1", "jsonrpc":"2.0", "method": "chain_getFinalizedHead", "params":[]}' http://localhost:9944 | jq .result) && echo PASS || echo FAIL


# start node (with delayed finalization)
cargo run -- --finalize-delay-sec 1

# upload contract
cargo contract upload --suri //Alice --execute --manifest-path=../ink-examples/erc20/Cargo.toml
# check finalized head matches chain head
sleep 1
test $(curl -sH "Content-Type: application/json" -d '{"id":"1", "jsonrpc":"2.0", "method": "chain_getHead", "params":[]}' http://localhost:9944 | jq .result) \
  = $(curl -sH "Content-Type: application/json" -d '{"id":"1", "jsonrpc":"2.0", "method": "chain_getFinalizedHead", "params":[]}' http://localhost:9944 | jq .result) && echo PASS || echo FAIL

```

Closes #160

Closes #203. This will be the first release to crates.io:

- Use crates.io dependencies, remove chain extension #204

Required for https://github.com/paritytech/ink/pull/1795 and
https://github.com/paritytech/cargo-contract/pull/1149

As discussed with @Kianenigma, @PierreBesson

 and others, this pull
request brings the ability to spin up a Codespace instance inside this
repository. The PR has two components:

- `devContainer.json`: The setup instructions to initialize the instance
with
- `updateContentCommand.sh`: A custom shell script to install the necessary
dependencies for Substrate and the contracts node template on the
Codespace instance that is invoked immediately after the instance is
created

It also includes a badge in the README to allow users to start a Codespace instance using these settings from their own GitHub account.

---------

Co-authored-by: Ben Greenberg <[email protected]>
Co-authored-by: German <[email protected]>
Co-authored-by: Sacha Lansky <[email protected]>
Co-authored-by: Sasha Gryaznov <[email protected]>

Minor improvements including spelling and fixing broken links.

This flag got removed from Substrate a while ago.

Related issue: https://github.com/paritytech/ink/issues/1007

Sync the repository with Substrate's
[polkadot-v0.9.37](https://github.com/paritytech/substrate/tree/polkadot-v0.9.37)
branch.

Sync the repository with Substrate's
[`polkadot-v0.9.34`](https://github.com/paritytech/substrate/tree/polkadot-v0.9.34

)
branch.

Co-authored-by: Bastian Köcher <[email protected]>
Co-authored-by: Alexander Theißen <[email protected]>

* Update to polkadot-v0.9.32

* Bump lockfile

* Update README

Co-authored-by: Alexander Theißen <[email protected]>

* Update to polkadot-v0.9.31

* Remove runtime benchmarks

* Remove try-runtime

* Track polkadot-v0.9.29

* Update lockfile

* Update README

* apply 324a18e

* sync up to 1c0d008

* sync with 1c0d008 and readme update

* set correct commit hash

* sync with #021f712

* Use resolver v2

* Sync with substrate

* Add new payment info runtime API

* Make dev chain spec the default

* Set sane log filtering by default

* Update README.md

Co-authored-by: Michael Müller <[email protected]>

Co-authored-by: Michael Müller <[email protected]>

* Add guide for synchronizing with Substrate

* Change `rm Cargo.lock` instruction

* Update sync instructions

* Remove breaking change note

* Update to latest substrate

* Update jsonrpsee

* Reduce size of deletion queue depth

* Bump commit hash

* Bump versions

* Synchronize with Substrate `/bin/node/runtime/src/lib.rs`

* Update runtime/src/lib.rs

Co-authored-by: Alexander Theißen <[email protected]>

* Increase allowed contract sizes back to the ones from `master`

* Sync with latest Substrate `master`

* Improve comment

Co-authored-by: Alexander Theißen <[email protected]>

* update now broken link

* Update README.md

Co-authored-by: Michael Müller <[email protected]>

Make `--dev` default behavior and highlight modifications that have been made for non-production use (#56)

* Fix repo link

* Make `dev` the default mode when started without cli params

* Explain difference to production node

* Improve readme

* Improve wording

* Synchronize with latest Substrate `master`

* Bump version to `0.12.0`

* Update `Cargo.lock`

* Update commit hash in readme

* Synchronize with Substrate

* Bump version to `0.11.0`

* Synchronize with Substrate

* Update commit hash

* Bump versions to `0.10.0`

* Synchronize with Substrate

* Bump versions to `0.9.0`

* Update `Cargo.lock`

* Update Substrate synced commit hash

* Synchronize with Substrate

* Bump versions to `0.8.0`

* Bump substrate

* Update README.md

* Bump dependencies

* Remove unused microunit

* Bump version

* Update README

* Update substrate dependencies to 7409589ab78e7cb508db873dd6384634d667b8f5

* Update runtime/Cargo.toml

Co-authored-by: Hernando Castano <[email protected]>

* Update node/src/service.rs

Co-authored-by: Hernando Castano <[email protected]>

* Apply rustfmt and update the commit reference in README.md

Co-authored-by: Hernando Castano <[email protected]>

* Sync with Substrate

* Bring back `CONTRACTS_DEBUG_OUTPUT`