Add prettier config to protocol-contract repo (#23)

.eslintignore

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+.yarn
+artifacts
+cache
+dist
+node_modules
+pkg
+typechain-types

.eslintrc.js

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+const path = require("path");
+
+const OFF = 0;
+
+/**
+ * @type {import("eslint").Linter.Config}
+ */
+module.exports = {
+  env: {
+    browser: false,
+    es2021: true,
+    mocha: true,
+    node: true,
+  },
+  extends: ["plugin:prettier/recommended"],
+  parser: "@typescript-eslint/parser",
+  parserOptions: {
+    ecmaVersion: 12,
+  },
+  plugins: [
+    "@typescript-eslint",
+    "prettier",
+    "simple-import-sort",
+    "sort-keys-fix",
+    "typescript-sort-keys",
+  ],
+  rules: {
+    "@typescript-eslint/sort-type-union-intersection-members": "error",
+    camelcase: "off",
+    "no-console": OFF,
+    "simple-import-sort/exports": "error",
+    "simple-import-sort/imports": "error",
+    "sort-keys-fix/sort-keys-fix": "error",
+    "typescript-sort-keys/interface": "error",
+    "typescript-sort-keys/string-enum": "error",
+  },
+  settings: {
+    "import/parsers": {
+      "@typescript-eslint/parser": [".js", ".jsx", ".ts", ".tsx", ".d.ts"],
+    },
+    "import/resolver": {
+      node: {
+        extensions: [".js", ".jsx", ".ts", ".tsx", ".d.ts"],
+      },
+      typescript: {
+        project: path.join(__dirname, "tsconfig.json"),
+      },
+    },
+  },
+};
+

.prettierignore

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+.yarn
+artifacts
+cache
+coverage*
+gasReporterOutput.json
+node_modules

.prettierrc

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+{
+  "printWidth": 120
+}

.solhint.json

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+{
+  "extends": "solhint:recommended",
+  "rules": {
+    "compiler-version": ["error", "0.8.7"],
+    "func-visibility": ["warn", { "ignoreConstructors": true }],
+    "reason-string": ["warn", { "maxLength": 80 }],
+    "no-empty-blocks": "off",
+    "check-send-result": "off"
+  }
+}