Implements #58 rgbd groups

Some polish work may still be required but it will generate a callback for every complete frameset

components/rgbd-sources/src/group.cpp

@@ -64,12 +64,12 @@ void Group::sync(int N, int B) {
 	}
 }
 
-void Group::sync(std::function<bool(const FrameSet &)> cb) {
+void Group::sync(std::function<bool(const ftl::rgbd::FrameSet &)> cb) {
 	callback_ = cb;
 	sync(-1,-1);
 }
 
-bool Group::getFrames(FrameSet &fs, bool complete) {
+bool Group::getFrames(ftl::rgbd::FrameSet &fs, bool complete) {
 	// Use oldest frameset or search back until first complete set is found?
 	if (complete) {
 		UNIQUE_LOCK(mutex_, lk);