Touch module code cleanup (#2465)

* Remove unused feature that allowed us to "pick" nodes using touch (it didn't really work and had some nasty hardcoded and costly implementation). Fixes Touch interaction picking refactor #1041

* General refactoring of code and removing redundant code

* Make touch markers prettier (change default color and smoothen edges)

* Add module property to control which renderable types are "directly touchable"

* Add SGN property to control which individual nodes are "directly touchable" ("SupportsDirectInteraction")

* Fix stuttering when zooming in closer than the orbitalnavigator allows

src/rendering/renderable.cpp

@@ -240,6 +240,10 @@ double Renderable::interactionSphere() const {
     return _interactionSphere;
 }
 
+std::string_view Renderable::typeAsString() const {
+    return _renderableType;
+}
+
 SurfacePositionHandle Renderable::calculateSurfacePositionHandle(
                                                  const glm::dvec3& targetModelSpace) const
 {