Add GitHub Action for Code Linting

.github/workflows/lint.yml

@@ -0,0 +1,85 @@
+name: Lint Code
+
+on: [push, pull_request]
+
+jobs:
+  lint_js:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Install ESLint globally
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y eslint  # Install ESLint globally
+
+    - name: Lint JavaScript
+      run: npx eslint .
+
+  lint_html:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Install HTMLHint globally
+      run: |
+        sudo npm install -g htmlhint
+
+    - name: Lint HTML
+      run: npx htmlhint .
+
+  fix_html:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Install HTML Tidy globally
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y tidy
+
+    - name: Lint and Fix HTML files
+      run: |
+        tidy -qe **/*.html
+
+  lint_css:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Install Stylelint globally
+      run: |
+        sudo npm install -g stylelint
+
+    - name: Lint CSS
+      run: npx stylelint "**/*.css"
+
+  lint_shell:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Install ShellCheck globally
+      run: |
+        sudo apt-get install -y shellcheck
+
+    - name: Lint Shell scripts
+      run: shellcheck **/*.sh
+
+  lint_cpp:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Install Clang-Tidy globally
+      run: |
+        sudo apt-get install -y clang-tidy
+
+    - name: Lint C++ code
+      run: clang-tidy **/*.cpp

eslint.config.js

@@ -0,0 +1,25 @@
+// eslint.config.js
+module.exports = [
+  {
+    languageOptions: {
+      globals: {
+        // Define any global variables here (e.g., for browsers)
+        window: 'readonly',
+        document: 'readonly',
+      },
+      parserOptions: {
+        ecmaVersion: 12, // ES2021
+        sourceType: 'module', // Enable ES6 modules
+      },
+    },
+    rules: {
+      'no-console': 'warn',  // Warn on console statements
+      'semi': ['error', 'always'], // Enforce semicolons
+      'quotes': ['error', 'single'], // Enforce single quotes
+      'eqeqeq': 'error', // Enforce strict equality (===)
+      'curly': 'error', // Enforce curly braces for control statements
+      'no-unused-vars': 'warn', // Warn about unused variables
+      'no-magic-numbers': 'off', // Optional: disable rule for magic numbers if you want
+    },
+  },
+];