Get Ethereum Relay to Compile (#21)

* Update dependencies

Upgrades Substrate based dependencies from v2.0.0 -> v2.0.0-alpha.1
and uses the `jsonrpsee`'s new feature flags. The actual code hasn't
been updated though, so this won't compile.

* Use `RawClient`s from `jsonrpsee`

* Update to use jsonrpsee's new API

* Hook up Ethereum Bridge Runtime, Relay, and Node Runtime

* Bump `parity-crypto` from v0.4 to v0.6

Fixes error when trying to compile tests. This was caused by
`parity-crypto` v0.4's use of `parity-secp256k1` over `secp256k1'.
Using the Parity fork meant multiple version of the same underlying
C library were being pulled in. `parity-crypto` v0.6 moved away from
this, only relying on `secp256k1` thus fixing the issue.

bridges/modules/ethereum/Cargo.toml

@@ -45,7 +45,7 @@ git = "https://github.com/paritytech/substrate/"
 [dev-dependencies]
 # TODO: Stop renaming this on import
 primitives = { package = "sp-bridge-eth-poa", path = "../../primitives/ethereum-poa", features = ["std", "test-helpers"] }
-parity-crypto = { version = "0.4", features = ["publickey"] }
+parity-crypto = { version = "0.6", features = ["publickey"] }
 
 [features]
 default = ["std"]

bridges/modules/substrate/Cargo.toml

@@ -24,7 +24,6 @@ default-features = false
 rev = "2afecf81ee19b8a6edb364b419190ea47c4a4a31"
 git = "https://github.com/paritytech/substrate/"
 
-
 [dependencies.pallet-session]
 version = "2.0.0-alpha.2"
 default-features = false