Create a Gradio App to showcase & test the VQASynth Pipeline

[harshbhatt7585]

The gradio should take an image and produce the outputs:

1. 3D models of objects which are compared
2. Caption of the scene between objects

[salma-remyx]

@harshbhatt7585 updated the gradio app to use the .run() methods of the classes instead of the apply_transform() methods for hf datasets since it reduced overhead Also, pr #32 helped improve the depth estimates and we're able to use the .pcd segmented point clouds without having to recreate them

Example screenshot of a test: