[cli] deploy command (#131)

* [cli] construct put_code extrinsic

* [cli] fetch current account nonce

* [cli] submit extrinsic skeleton

* [cli] submit extrinsic compiles and works?

* [cli] refactor futures

* [cli] extract substrate rpc module

* [cli] Encapsulate rpc calls in struct

* [cli] extract rpc call methods

* [cli] temporarily add patch for client pub/sub

* [cli] generic Hash

* [cli] back to explicit H256

* [cli] update parity-codec

* [cli] add methods to submit and watch, and fetch events

* [cli] update to paritytech jsonrpc repo patch

* [cli] switch to ws transport

* [cli] WIP: return extrinsic result with code hash

* [cli] subscribe to block events

* [cli] use jsonrpc 12.1 rather than crates,io patch

* [cli] add logging for troubleshooting

* [cli] deserialize OpaqueExtrinsic properly, logging for ext hash

* [cli] still trying to get the Events for the block

* [cli] log events storage key for debugging

* [cli] refactor: function to extract extrinsic events

* [cli] move extract code hash to deploy

* ignore rust-toolchain file used for local builds

* Update to new extrinsic format with extra

* Fix signature with extra

* Make System Events subscription work

* Refactor EventRecord decoding

* Extract code hash from events

* rustfmt

* Refactor: extract functions from Author

* Remove stuff from .gitignore which could go in .git/info/exclude

* Remove ws::connect unwraps

* Pass in url from cli flag

* Combine all rpc interfaces

* Consistency in log messages

* Expand short arg names

* rustfmt

* Comments and refactoring

* rustfmt

* Pass in secret in from command line

* Change default url to ws

* Add integration test (not passing yet) for deploy command

* Extracted substrate extrinsic RPC to subxt

* Get it working with subxt

* [cli] update to latest subxt

* [cli] convert to new subxt

* [cli] add CheckVersion to SignedExtra type

* Use latest version of subxt with dynamic events

* [cli] cargo fmt

* [cli] deploy: remove dependency on node-runtime!

* [cli] use assert_matches in test

* [cli] reuse crate metadata fn from build command to get wasm path

* [cli] add comments

* [cli] remove unused dependencies

* [cli] remove more unused dependencies

* [cli] Use static method

* [cli] doc comments

* [cli] rename surl -> suri

* [cli] move Runtime defintion to subxt, reduce direct substrate deps

* [cli] rustfmt