orx-kinect refactoring + new general orx-depth-camera (#257)

orx-jvm/orx-kinect-v1-demo/src/main/kotlin/Kinect1Demo08LogLevelFlood.kt

@@ -0,0 +1,30 @@
+package org.openrndr.extra.kinect.v1.demo
+
+import org.openrndr.application
+import org.openrndr.extra.kinect.v1.Kinect1
+
+/**
+ * Here you can see freenect FLOOD log level in action.
+ *
+ * Note: technically it would be possible to redirect kinect log to
+ * slf4j logger in the implementation of [Kinect1], however I removed
+ * this callback and left logs on the standard out, because it might get so noisy,
+ * that native-to-JVM round trip with conversion into [String] for JVM
+ * logging might completely kill the performance and result in
+ * stack overflow exception.
+ */
+fun main() = application {
+    configure { // default resolution of the Kinect v1 depth camera
+        width = 640
+        height = 480
+    }
+    program {
+        val kinect = extend(Kinect1())
+        kinect.logLevel = Kinect1.LogLevel.FLOOD
+        val device = kinect.openDevice()
+        device.depthCamera.enabled = true
+        extend {
+            drawer.image(device.depthCamera.currentFrame)
+        }
+    }
+}