feat: add os version show for linux

include/Cubed/tools/system_version.hpp

@@ -0,0 +1,38 @@
+#pragma once
+
+#include <string>
+#include <fstream>
+
+#include <Cubed/tools/log.hpp>
+
+#ifdef _WIN32
+
+#elif defined(__linux__)
+inline bool get_os_version(std::string& str) {
+    std::ifstream file("/etc/os-release");
+    if (!file.is_open()) {
+        Logger::error("Can't Open /etc/os-release");
+        return false;
+    }
+    std::string line;
+    while (std::getline(file, line)) {
+        size_t eq_pos = line.find("=");
+        if (eq_pos == std::string::npos) {
+            continue;
+        }
+        std::string key = line.substr(0, eq_pos);
+        if (key != "PRETTY_NAME") {
+            continue;
+        }
+        str = line.substr(eq_pos + 1);
+        
+        if (str.size() >= 2 && str.front() == '"' && str.back() == '"') {
+            str = str.substr(1, str.size() - 2);
+            return true;
+        }
+    }
+    return false;
+}
+#endif
+
+