元素边框线hook影响太大，减少影响

iOS/DoraemonKit/Src/Core/Plugin/UI/ViewMetrics/DoraemonMetricsViewController.m

@@ -37,6 +37,7 @@
 
 #pragma mark -- DoraemonSwitchViewDelegate
 - (void)changeSwitchOn:(BOOL)on sender:(id)sender{
+    [DoraemonViewMetricsConfig defaultConfig].opened = YES;
     [DoraemonViewMetricsConfig defaultConfig].enable = on;
 }
 

iOS/DoraemonKit/Src/Core/Plugin/UI/ViewMetrics/Function/DoraemonViewMetricsConfig.h

@@ -13,7 +13,7 @@
 @property (nonatomic, strong) UIColor *borderColor;     //default randomColor
 @property (nonatomic, assign) CGFloat borderWidth;      //default 1
 @property (nonatomic, assign) BOOL enable;              //default NO
-
+@property (nonatomic, assign) BOOL opened;              //default NO
 + (instancetype)defaultConfig;
 
 @end

iOS/DoraemonKit/Src/Core/Plugin/UI/ViewMetrics/Function/DoraemonViewMetricsConfig.m

@@ -26,7 +26,7 @@
     self = [super init];
     if (self) {
         self.borderWidth = 1;
-        self.enable = NO;
+        //self.enable = NO;
     }
     return self;
 }

iOS/DoraemonKit/Src/Core/Plugin/UI/ViewMetrics/Function/UIView+DoraemonViewMetrics.m

@@ -31,7 +31,9 @@
 - (void)doraemon_layoutSubviews
 {
     [self doraemon_layoutSubviews];
+    if (DoraemonViewMetricsConfig.defaultConfig.opened) {
         [self doraemonMetricsRecursiveEnable:DoraemonViewMetricsConfig.defaultConfig.enable];
+    }
 }
 
 - (void)doraemonMetricsRecursiveEnable:(BOOL)enable