Implement scale-info for all primitive types

chains/ethereum/playground/Cargo.toml

@@ -0,0 +1,28 @@
+[package]
+name = "playground"
+version = "0.1.0"
+edition = "2021"
+license = "MIT"
+repository = "https://github.com/analog-labs/chain-connectors"
+description = "Ethereum integration tests."
+
+[features]
+default = ["sputnik-vm"]
+sputnik-vm = ["rosetta-ethereum-executor/sputnik-evm"]
+rust-vm = ["rosetta-ethereum-executor/rust-evm"]
+
+[dependencies]
+async-trait = "0.1"
+ethers-solc = { version = "2.0", features = ["async", "project-util"] }
+eyre = "0.6"
+hex-literal = "0.4"
+inkwell = { version = "0.2.0", features = ["target-webassembly", "no-libffi-linking", "llvm15-0"] }
+jsonrpsee = { version = "0.20", default-features = false, features = ["macros", "client"] }
+rosetta-ethereum-executor = { workspace = true, features = ["jsonrpsee"] }
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+thiserror = "1.0"
+tokio = { version = "1.32", features = ["rt-multi-thread", "macros"] }
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["tracing-log", "parking_lot"] }
+url = "2.4.0"

chains/ethereum/playground/res/Example.sol

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+// SPDX-License-Identifier: GPL-3.0
+
+pragma solidity >=0.5.0 <0.9.0;
+
+contract Example {
+    uint256 private _value;
+
+    function value() public view returns (uint256) {
+        return _value;
+    }
+
+    function setValue(uint256 newValue) public {
+        _value = newValue;
+    }
+}