Statemine primitives (#1625)

* Statemine primitives

* ref issue in TODO

* fix TODO

bridges/primitives/chain-statemine/Cargo.toml

@@ -0,0 +1,24 @@
+[package]
+name = "bp-statemine"
+description = "Primitives of Statemine runtime."
+version = "0.1.0"
+authors = ["Parity Technologies <admin@parity.io>"]
+edition = "2021"
+license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
+
+[dependencies]
+
+# Bridge Dependencies
+
+bp-polkadot-core = { path = "../polkadot-core", default-features = false }
+
+# Substrate Based Dependencies
+
+sp-version = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+
+[features]
+default = ["std"]
+std = [
+	"bp-polkadot-core/std",
+    "sp-version/std",
+]