Added eslint tool (#135)

* Added a "Remember to add a good commit message"

* Added eslint

* Added eslint tool

* Changes made

---------

Co-authored-by: Aniket Shitole <[email protected]>
Co-authored-by: Priyankar Pal <[email protected]>

.eslintrc.cjs

@@ -0,0 +1,74 @@
+/* eslint-disable max-len */
+module.exports = {
+  env: {
+    browser: true,
+    es2021: true
+  },
+  extends: [
+    'plugin:react/recommended',
+    'standard'
+  ],
+  overrides: [
+    {
+      files: ['*.md'],
+      rules: {
+        'commit-convention/commit-convention': 'off'
+      }
+    }
+  ],
+  parserOptions: {
+    ecmaVersion: 'latest',
+    sourceType: 'module'
+  },
+  plugins: [
+    'react'
+  ],
+  rules: {
+    // Disallow unused variables
+    'no-unused-vars': 'error',
+
+    // Enforce a maximum line length
+    'max-len': ['warn', { code: 80 }],
+
+    // Enforce consistent indentation
+    indent: ['error', 2],
+
+    // Enforce the use of semicolons
+    semi: ['error', 'always'],
+
+    // Require single quotes for strings
+    quotes: ['error', 'single'],
+
+    // Require curly braces for all control statements
+    curly: ['error', 'all'],
+
+    // Disallow the use of `var` to declare variables
+    'no-var': 'error',
+
+    // Require conventional commit messages
+    'commit-convention/commit-convention': [
+      'error',
+      {
+        'type-enum': [
+          'feat', // A new feature
+          'fix', // A bug fix
+          'docs', // Documentation only changes
+          'style', // Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc.)
+          'refactor', // A code change that neither fixes a bug nor adds a feature
+          'perf', // A code change that improves performance
+          'test', // Adding missing tests or correcting existing tests
+          'chore', // Changes to the build process or auxiliary tools and libraries such as documentation generation
+          'revert', // Revert to a commit
+          'build' // Changes that affect the build system or external dependencies (example scopes: gulp, broccoli, npm)
+        ],
+        'type-case': 'lowerCase',
+        'type-empty': false,
+        'subject-empty': false,
+        'subject-full-stop': false,
+        'header-max-length': 72,
+        'body-max-line-length': 80,
+        'footer-max-line-length': 80
+      }
+    ]
+  }
+};