Adding send-state sub-entry for getting only program/preview (#159)

Author: SteffeyDev

README.md

@@ -285,6 +285,8 @@ Feedback: Enabled for `/atem/hyperdeck/$i/clip`.  The state of the HyperDeck is
 
   - **Request all feedback available** `/atem/send-status`
      - This will query the switcher and send back the status for the program/preview, transition control, keyers, and macros
+  - **Request only Program/Preview/Bar status** `/atem/send-status/mix-effect-block`
+     - This will query the switcher and send back the status for only program/preview, bar, and preview
   - e.g. This can be used when a new OSC client device is brought online, so that it gets the current status of the system
 
 ### Type Casting

atemOSC/OSCReceiver.mm

@@ -143,6 +143,10 @@ - (instancetype) initWithDelegate:(AppDelegate *) delegate
 		[appDel sendStatus];
 	}];
 
+	[self addEndpoint:@"/atem/send-status/mix-effect-block" handler:^void(NSDictionary *d, OSCValue *v) {
+		[appDel mMixEffectBlockMonitor]->sendStatus();
+	}];
+	
 	[self addEndpoint:@"/atem/preview" valueType: OSCValInt handler:^void(NSDictionary *d, OSCValue *v) {
 		activateChannel([v intValue], false);
 	}];