iOS:Support debugging

doric-iOS/Pod/Classes/Engine/DoricJSEngine.h

@@ -46,6 +46,8 @@ NS_ASSUME_NONNULL_BEGIN
 - (JSValue *)invokeDoricMethod:(NSString *)method argumentsArray:(NSArray *)args;
 
 - (void)ensureRunOnJSThread:(dispatch_block_t)block;
+
+- (void)initJSEngine;
 @end
 
 NS_ASSUME_NONNULL_END

doric-iOS/Pod/Classes/Engine/DoricJSEngine.m

@@ -96,6 +96,7 @@ - (instancetype)init {
             [self initJSExecutor];
             [self initDoricEnvironment];
         }];
+        [self.registry registerMonitor:[DoricDefaultMonitor new]];
     }
     return self;
 }
@@ -126,7 +127,6 @@ - (void)threadRun {
 }
 
 - (void)initJSEngine {
-    [self.registry registerMonitor:[DoricDefaultMonitor new]];
     self.jsExecutor = [DoricJSCoreExecutor new];
 }