Resolve "Command Submit Interface"

Closes #39 (closed)

include/vkcv/Core.hpp

@@ -29,6 +29,9 @@ namespace vkcv
 		std::vector<vk::Semaphore> waitSemaphores;
 		std::vector<vk::Semaphore> signalSemaphores;
 	};
+	
+	typedef std::function<void(const vk::CommandBuffer& cmdBuffer)> RecordCommandFunction;
+	typedef std::function<void(void)> FinishCommandFunction;
 
     class Core final
     {
@@ -179,9 +182,15 @@ namespace vkcv
 
 		vk::Format getSwapchainImageFormat();
 
-		void submitCommands(
-			const SubmitInfo &submitInfo,
-			const std::function<void(vk::CommandBuffer cmdBuffer)> recording, 
-			const std::function<void()> finishCallback);
+		/**
+		 * Submit a command buffer to any queue of selected type. The recording can be customized by a
+		 * custom record-command-function. If the command submission has finished, an optional finish-function
+		 * will be called.
+		 *
+		 * @param submitInfo Submit information
+		 * @param record Record-command-function
+		 * @param finish Finish-command-function or nullptr
+		 */
+		void submitCommands(const SubmitInfo &submitInfo, const RecordCommandFunction& record, const FinishCommandFunction& finish);
     };
 }