Add fetchSublist method to BinaryTable for improved data retrieval

cpp/debug/debug_simple.cpp

@@ -0,0 +1,47 @@
+#include <iostream>
+#include <filesystem>
+#include "../binary_table.h"
+
+int main() {
+    using namespace bt;
+    
+    const std::string filename = "debug_simple.bin";
+    if (std::filesystem::exists(filename)) {
+        std::filesystem::remove(filename);
+    }
+    
+    BinaryTable table(filename);
+    table.initialize();
+    
+    std::cout << "1. Storing key1..." << std::endl;
+    table.set<int32_t>("key1", 100);
+    
+    std::cout << "2. Reading key1..." << std::endl;
+    try {
+        int32_t val = table.get<int32_t>("key1");
+        std::cout << "   ✅ key1 = " << val << std::endl;
+    } catch (const std::exception& e) {
+        std::cout << "   ❌ key1 failed: " << e.what() << std::endl;
+    }
+    
+    std::cout << "3. Storing key2..." << std::endl;
+    table.set<int32_t>("key2", 200);
+    
+    std::cout << "4. Reading key2..." << std::endl;
+    try {
+        int32_t val = table.get<int32_t>("key2");
+        std::cout << "   ✅ key2 = " << val << std::endl;
+    } catch (const std::exception& e) {
+        std::cout << "   ❌ key2 failed: " << e.what() << std::endl;
+    }
+    
+    std::cout << "5. Re-reading key1..." << std::endl;
+    try {
+        int32_t val = table.get<int32_t>("key1");
+        std::cout << "   ✅ key1 = " << val << std::endl;
+    } catch (const std::exception& e) {
+        std::cout << "   ❌ key1 failed: " << e.what() << std::endl;
+    }
+    
+    return 0;
+}