Overhaul crypto (Schnorr/Ristretto, HDKD, BIP39) (#1795)

* Rijig to Ristretto

* Rebuild wasm

* adds compatibility test with the wasm module

* Add Ed25519-BIP39 support

* Bump subkey version

* Update CLI output

* New keys.

* Standard phrase/password/path keys.

* Subkey uses S-URI for secrets

* Move everything to use new HDKD crypto.

* Test fixes

* Ignore old test vector.

* fix the ^^ old test vector.

* Fix tests

* Test fixes

* Cleanups

* Fix broken key conversion logic in grandpa

CC @rphmeier

* Remove legacy Keyring usage

* Traitify `Pair`

* Replace Ed25519AuthorityId with ed25519::Public

* Expunge Ed25519AuthorityId type!

* Replace Sr25519AuthorityId with sr25519::Public

* Remove dodgy crypto type-punning conversions

* Fix some tests

* Avoid trait

* Deduplicate DeriveJunction string decode

* Remove cruft code

* Fix test

* Minor removals

* Build fix

* Subkey supports sign and verify

* Inspect works for public key URIs

* Remove more crypto type-punning

* Fix typo

* Fix tests

substrate/core/rpc/Cargo.toml

@@ -28,7 +28,9 @@ tokio = "0.1.7"
 [dev-dependencies]
 assert_matches = "1.1"
 futures = "0.1.17"
+sr-io = { path = "../sr-io" }
 test_client = { package = "substrate-test-client", path = "../test-client" }
+test_runtime = { package = "substrate-test-runtime", path = "../test-runtime" }
 consensus = { package = "substrate-consensus-common", path = "../consensus/common" }
 rustc-hex = "2.0"
 hex-literal = "0.1"