integrate and link lib curl for android, add VAO support for brush draw, sync canvas with screen redraw instead of input events

android/CMakeLists.txt

@@ -46,7 +46,7 @@ target_include_directories(native-lib PRIVATE
 	../libs/tinyxml2
 	../libs/yoga
 	../libs/stb
-	../libs/curl/android/include
+	../libs/curl-android-ios/prebuilt-with-ssl/android/include
 )
 
 # add lib dependencies
@@ -54,7 +54,7 @@ target_link_libraries(
 	native-lib
 	android
 	app-glue
-	${CMAKE_SOURCE_DIR}/../libs/curl/android/armeabi-v7a/libcurl.a
+	${CMAKE_SOURCE_DIR}/../libs/curl-android-ios/prebuilt-with-ssl/android/armeabi-v7a/libcurl.a
 	EGL
 	GLESv3
 	log