Chore: Eslint & Prettier setup (#72)

* Switch from npm to yarn v1

* Setup eslint & prettier

* Format & fix Linting

JoyboyCommunity/.eslintrc.js

@@ -0,0 +1,53 @@
+require('@uniswap/eslint-config/load');
+
+module.exports = {
+  extends: ['@uniswap/eslint-config/react'],
+
+  env: {
+    'react-native/react-native': true,
+  },
+
+  plugins: ['react', 'react-native', 'react-hooks'],
+
+  rules: {
+    'prettier/prettier': [
+      'error',
+      {
+        endOfLine: 'auto',
+      },
+    ],
+    'no-empty': 'warn',
+    '@typescript-eslint/no-empty-function': 'warn',
+    'react-hooks/rules-of-hooks': 'error',
+    'react-hooks/exhaustive-deps': 'warn',
+    'react/function-component-definition': [
+      'error',
+      {
+        unnamedComponents: ['function-expression', 'arrow-function'],
+        namedComponents: ['function-declaration', 'arrow-function'],
+      },
+    ],
+    'react/jsx-props-no-spreading': 'off',
+    'react/require-default-props': 'off',
+    'react/jsx-filename-extension': [1, {extensions: ['.js', '.jsx', '.ts', '.tsx']}],
+    'react/prop-types': 'off',
+    'react/button-has-type': 'off',
+    'react-native/no-raw-text': 'off',
+    'react-native/no-single-element-style-arrays': 'error',
+    'react/jsx-one-expression-per-line': 'off',
+
+    // These configs should be enabled after the hackathon and we have time to fix all the issues
+    'react-native/no-unused-styles': 'off',
+    'react-native/no-inline-styles': 'off',
+    'react-native/no-color-literals': 'off',
+  },
+
+  overrides: [
+    {
+      files: ['**/*.ts', '**/*.tsx'],
+      rules: {
+        'import/no-unused-modules': 'off',
+      },
+    },
+  ],
+};

JoyboyCommunity/.gitattributes

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+* text eol=lf
+
+# Windows files should use crlf line endings other should use lf
+# https://help.github.com/articles/dealing-with-line-endings/
+*.bat text eol=crlf

JoyboyCommunity/.prettierrc

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+{
+  "bracketSpacing": false,
+  "singleQuote": true,
+  "trailingComma": "all",
+  "printWidth": 100,
+  "bracketSameLine": false,
+  "endOfLine": "lf"
+}