Add New NeRF-Based Robotics Papers: NeRF-Aug, NeRF-Con, DISORF, and Uncertainty-aware Active Learning

[mhd-hanif]

This PR adds four new papers to the Awesome-Implicit-NeRF-Robotics repository under their respective categories:

1. NeRF-Aug (Manipulation/RL): Data augmentation using NeRFs for robotics applications.
2. NeRF-Con (Object Reconstruction): Automated construction progress monitoring with NeRFs.
3. Uncertainty-aware Active Learning of NeRF-based Object Models (Manipulation/RL): Active learning for NeRF-based object models in robotic manipulation.
4. DISORF (SLAM): A distributed online NeRF training and rendering framework for mobile robots.