dsq followup work 1

fix animation export filename eroneous append
add ::canLoadCachedDSQ(const Torque::Path& path) methods to dae and assimp chains

SPECIAL NOTE:
as the above leads to dsqs not being previewable in editor, nor being able to understand they shouldn't be filtering out bones, for the block
         bool readSuccess = false;
         if (canLoadCached)
         {
            readSuccess = shape->read(&cachedStream);
         }
         else
         {
            readSuccess = shape->importSequences(&cachedStream, cachedPath);
         }
we'll be wanting to inject an armature proxy method to fill out          TSShape *shape = new TSShape;

untill such time as that's sorted, there's a bool gTryUseDSQs = false; killswitch in for dsqs

Engine/source/ts/collada/colladaShapeLoader.h

@@ -53,6 +53,7 @@ public:
    void computeBounds(Box3F& bounds) override;
 
    static bool canLoadCachedDTS(const Torque::Path& path);
+   static bool canLoadCachedDSQ(const Torque::Path& path);
    static bool checkAndMountSketchup(const Torque::Path& path, String& mountPoint, Torque::Path& daePath);
    static domCOLLADA* getDomCOLLADA(const Torque::Path& path);
    static domCOLLADA* readColladaFile(const String& path);