feat: add threadman worker for Node.js multi-threading support

- Introduced `threadman_worker.js` to handle worker tasks using workerpool.
- Updated `utils.js` to remove unnecessary global BigInt comment.
- Refactored algebra tests to use Vitest framework, improving test structure and readability.
- Converted all test files to use Vitest for assertions and lifecycle methods.
- Added Vite configuration for building both Node.js and browser-compatible versions.
- Implemented clean-up plugin in Vite to remove stale build artifacts before each build.
- Enhanced test cases for various fields (Zq, Rat, Scalar) to ensure correctness and consistency.

Author: Kolezhniuk

.eslintrc.cjs

@@ -1,34 +1,27 @@
 name: Continuous Integration
-on:
-  push:
-    branches:
-      - master
-  pull_request:
+on: [push, pull_request]
 
 jobs:
   test:
     name: Test
-    runs-on: ${{ matrix.os }}
-
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-        node-version: [lts/*, lts/-1, lts/-2]
+    timeout-minutes: 15
+    runs-on: ubuntu-latest
 
     steps:
       - name: Checkout project
-        uses: actions/checkout@v2
+        uses: actions/checkout@v6
 
       - name: Setup Node.js
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v6
         with:
-          node-version: ${{ matrix.node-version }}
-          check-latest: true
-          cache: 'npm'
+          node-version: "lts/*"
+          cache: "npm"
 
       - name: Install dependencies
         run: npm ci
 
+      - name: Install Playwright dependencies
+        run: npx playwright install
+
       - name: Run tests
         run: npm test