Blender addon: various bugs

1. When initially loading an sbsar, the chosen resolution is ignored. For example, the width reads "1024" in both the addon preferences and in the Substance 3D panel, but the material generates 256x256 maps instead. Clicking on default preset or unlinking width/height causes the textures to be re-rendered at 1024, but changing the substance parameters (color etc) does not.

2. In addon preferences, the "initial load format" doesn't get saved and is ignored when loading sbsar. Every format always defaults to TGA.

3. In addon preferences, the name match filter doesn't seem to work (for example, I can't make it ignore Displacement outputs, which is often desirable when targeting/previewing in Eevee).

4. Despite an attempt to ensure OpenGL normals, often the sbsar will output a Y- normal map anyway. It would be nice to have a tickbox in the Substance panel to flip the green channel at will. Adding an RGBCurves node between the texture and the normal map nodes (and then muting/unmuting it) would do it.

5. The addon will silently fail to load an sbsar due to access error if Blender's temp directory doesn't exist. For example, this can happen if the user kept updating a config file from pre-2.80 Blender versions. This isn't strictly the addon's fault, but a more specific error would have been nice.

(Addon 0.18.5, Integration Tools 1.4.2, Blender 3.2.1, Windows 10)