Add initial hardhat project structure

* Create initial hardhat project structure

Created from `npx hardhat`

* Add VSCode recommended extensions

* Use solidity 0.8.16

* Add eslint, prettier for formatting

* Add github actions for testing

.eslintignore

@@ -0,0 +1,5 @@
+**/node_modules/*
+package-lock.json
+typechain-types
+artifacts
+cache

.eslintrc.json

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+{
+  "env": {
+    "es2021": true,
+    "node": true
+  },
+  "extends": ["eslint:recommended", "plugin:@typescript-eslint/recommended"],
+  "overrides": [],
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": {
+    "ecmaVersion": "latest",
+    "sourceType": "module"
+  },
+  "plugins": ["@typescript-eslint"],
+  "rules": {}
+}

.github/workflows/verify.yml

@@ -0,0 +1,20 @@
+name: Verify
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  lint:
+    name: "Verify"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          cache: "npm"
+      - run: npm install
+      - run: npm run lint
+      - run: npm test

.gitignore

@@ -0,0 +1,23 @@
+node_modules
+.env
+coverage
+coverage.json
+typechain
+typechain-types
+
+#Hardhat files
+cache
+artifacts
+
+
+node_modules
+.env
+coverage
+coverage.json
+typechain
+typechain-types
+
+#Hardhat files
+cache
+artifacts
+

.prettierignore

@@ -0,0 +1,5 @@
+node_modules
+package-lock.json
+typechain-types
+artifacts
+cache

.prettierrc.json

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+{
+  "trailingComma": "none"
+}

.vscode/extensions.json

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+{
+  "recommendations": ["NomicFoundation.hardhat-solidity"]
+}

.vscode/settings.json

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+{
+  "[solidity]": {
+    "editor.defaultFormatter": "NomicFoundation.hardhat-solidity"
+  },
+  "hardhat.telemetry": false
+}

README.md

@@ -1 +1,13 @@
-# valyria-core
+# valyria-core
+
+This project demonstrates a basic Hardhat use case. It comes with a sample contract, a test for that contract, and a script that deploys that contract.
+
+Try running some of the following tasks:
+
+```shell
+npx hardhat help
+npx hardhat test
+GAS_REPORT=true npx hardhat test
+npx hardhat node
+npx hardhat run scripts/deploy.ts
+```

contracts/Lock.sol

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+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.16;
+
+// Uncomment this line to use console.log
+// import "hardhat/console.sol";
+
+contract Lock {
+    uint256 public unlockTime;
+    address payable public owner;
+
+    event Withdrawal(uint256 amount, uint256 when);
+
+    constructor(uint256 _unlockTime) payable {
+        require(
+            block.timestamp < _unlockTime,
+            "Unlock time should be in the future"
+        );
+
+        unlockTime = _unlockTime;
+        owner = payable(msg.sender);
+    }
+
+    function withdraw() public {
+        // Uncomment this line, and the import of "hardhat/console.sol", to print a log in your terminal
+        // console.log("Unlock time is %o and block timestamp is %o", unlockTime, block.timestamp);
+
+        require(block.timestamp >= unlockTime, "You can't withdraw yet");
+        require(msg.sender == owner, "You aren't the owner");
+
+        emit Withdrawal(address(this).balance, block.timestamp);
+
+        owner.transfer(address(this).balance);
+    }
+}

hardhat.config.ts

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+import { HardhatUserConfig } from "hardhat/config";
+import "@nomicfoundation/hardhat-toolbox";
+
+const config: HardhatUserConfig = {
+  solidity: "0.8.16"
+};
+
+export default config;