Initial commit: Pi calculation benchmark with 34 languages

- Added implementations for: bash, brainfuck, c, cpp, crystal, csharp, d, dart, elixir, erlang, fortran, go, haskell, java, javascript, julia, kotlin, objective-c, scala, typescript, lua, nim, odin, perl, php, python, r, ruby, rust, swift, zig, assembly, vimscript, wolfram
- All implementations use Machin's formula: π/4 = 4*arctan(1/5) - arctan(1/239)
- Build system with ./build.sh, test system with ./test.sh
- Performance testing with ./run_all.sh
- Comprehensive README.md explaining performance differences
- Test framework verifies correctness against known π values

javascript/src/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "javascript-pi",
+  "version": "1.0.0",
+  "description": "JavaScript pi calculation",
+  "scripts": {
+    "test": "jest"
+  },
+  "dependencies": {
+    "big.js": "^7.0.1"
+  },
+  "devDependencies": {
+    "jest": "^29.0.0"
+  }
+}