Unified linting file and added linting pipeline

Author: eirikhanasand

.eslintignore

@@ -0,0 +1,40 @@
+name: Lint Code
+
+on:
+  push:
+    branches:
+      - '*'
+  pull_request:
+    branches:
+      - '*'
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      # Sets up Node.js environment
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: '20'
+
+      # Installs dependencies
+      - name: Install dependencies
+        run: npm install
+
+      # Runs ESLint
+      - name: Run ESLint
+        run: npx eslint --fix ./src
+
+      # Displays result
+      - name: Check for ESLint errors
+        run: |
+          if npx eslint --fix ./src; then
+            echo "Linting passed!"
+          else
+            echo "Linting failed!"
+            exit 1
+          fi

.eslintrc.json

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+import eslint from '@eslint/js';
+import tseslint from 'typescript-eslint';
+import typescriptParser from '@typescript-eslint/parser';
+import stylisticJs from '@stylistic/eslint-plugin-js';
+
+export default [
+    eslint.configs.recommended,
+    ...tseslint.configs.recommended,
+    {
+        ignores: ['dist', 'node_modules'],
+        plugins: {
+            '@stylistic/js': stylisticJs,
+        },
+        languageOptions: {
+            sourceType: 'module',
+            ecmaVersion: 2024,
+            parser: typescriptParser
+        },
+        rules: {
+            'strict': 'error',
+            'no-var': 'error',
+            'array-callback-return': 'error',
+            'yoda': 'error',
+            '@stylistic/js/indent': [
+                'error',
+                4,
+            ],
+            '@stylistic/js/linebreak-style': [
+                'error',
+                'unix'
+            ],
+            '@stylistic/js/quotes': [
+                'error',
+                'double'
+            ],
+            '@stylistic/js/semi': [
+                'error',
+                'always'
+            ],
+            '@typescript-eslint/no-unused-vars': 'error',
+            '@typescript-eslint/ban-ts-comment': 'off',
+            '@typescript-eslint/no-non-null-assertion': 'off'
+        }
+    }
+];