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

build.sh

@@ -0,0 +1,73 @@
+#!/bin/bash
+
+# Build script for all pi calculation programs
+# This script calls build.sh for each language
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+cd "$SCRIPT_DIR"
+
+echo "=== Building all pi calculation programs ==="
+echo ""
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+# Track success/failure
+BUILD_SUCCESS=0
+BUILD_FAILED=0
+
+# Function to print success message
+print_success() {
+    echo -e "${GREEN}✓${NC} $1 built successfully"
+    BUILD_SUCCESS=$((BUILD_SUCCESS + 1))
+}
+
+# Function to print error message
+print_error() {
+    echo -e "${RED}✗${NC} $1 build failed"
+    BUILD_FAILED=$((BUILD_FAILED + 1))
+}
+
+# Function to print warning message
+print_warning() {
+    echo -e "${YELLOW}⚠${NC} $1"
+}
+
+# List of all languages
+LANGUAGES="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 wolfram vimscript"
+
+# Build each language
+for lang in $LANGUAGES; do
+    echo "=== $lang ==="
+    if [ -f "$lang/cmd/build.sh" ]; then
+        cd "$lang"
+        if cmd/build.sh 2>&1; then
+            print_success "$lang"
+        else
+            print_error "$lang"
+        fi
+        cd "$SCRIPT_DIR"
+    else
+        print_error "$lang/cmd/build.sh not found"
+    fi
+    echo ""
+done
+
+echo "=== Build Summary ==="
+echo -e "Successful: ${GREEN}$BUILD_SUCCESS${NC}"
+echo -e "Failed: ${RED}$BUILD_FAILED${NC}"
+
+if [ $BUILD_FAILED -eq 0 ]; then
+    echo -e "${GREEN}✓ All builds completed successfully!${NC}"
+    exit 0
+else
+    echo -e "${RED}✗ Some builds failed${NC}"
+    exit 1
+fi
+
+# ============================================
+# Bash (no compilation needed)
+# ============================================