fix: 修复二维码日志目录使用框架运行时路径

修改二维码库的日志路径配置，使用框架提供的 runtime_path 函数，避免直接使用代码目录作为日志存储位置，适配框架的目录结构规范

backend/crmeb/patches/dh2y-think-qrcode-log-dir.patch

@@ -0,0 +1,13 @@
+diff --git a/src/phpqrcode/qrconfig.php b/src/phpqrcode/qrconfig.php
+index 62e7f97..5121451 100644
+--- a/src/phpqrcode/qrconfig.php
++++ b/src/phpqrcode/qrconfig.php
+@@ -7,7 +7,7 @@
+      
+     define('QR_CACHEABLE', true);                                                               // use cache - more disk reads but less CPU power, masks and format templates are stored there
+     define('QR_CACHE_DIR', dirname(__FILE__).DIRECTORY_SEPARATOR.'cache'.DIRECTORY_SEPARATOR);  // used when QR_CACHEABLE === true
+-    define('QR_LOG_DIR', dirname(__FILE__).DIRECTORY_SEPARATOR);                                // default error logs dir   
++    define('QR_LOG_DIR', function_exists('runtime_path') ? runtime_path() : false);             // error logs dir -> framework runtime
+     
+     define('QR_FIND_BEST_MASK', true);                                                          // if true, estimates best mask (spec. default, but extremally slow; set to false to significant performance boost but (propably) worst quality code
+     define('QR_FIND_FROM_RANDOM', false);                                                       // if false, checks all masks available, otherwise value tells count of masks need to be checked, mask id are got randomly