#189 Predeployed Contracts functionality (#218)

* Added a possibility to predeploy contracts to the genesis block
* Added some default contracts to predeploy.

evm-template/node/src/contracts/hardhat.rs

@@ -0,0 +1,10 @@
+use serde::Deserialize;
+
+use super::{abi::AbiItem, deserialize_bytecode};
+
+#[derive(Deserialize)]
+pub struct HardhatContract {
+    pub abi: Vec<AbiItem>,
+    #[serde(deserialize_with = "deserialize_bytecode")]
+    pub bytecode: Vec<u8>,
+}