Rust future improvements

[chuanhao01]

To be done after the next week

• Learn mocking for tests
  • Examples being mocking the Rand crate
  • Also other complicated structs (but this might not be needed with no coverage)
• Adding a CLI tool to specify output file name
• Adding a way to serialze worlds into json
• Adding a way to load worlds from json (could be better other format)
• Adding a way to read camera params from json
• Adding GPU support (maybe)
• Get seeded runs for reproducibility
  • Compare to see if BVH and Vec implementation of hit gives same output
• Clean up Display and Debug of the different structs

Code

• Add a Transform Struct that takes in any Transformation Trait Object (To share logic between different transformations like Rotation and Translation)
• Experiment with a 3DAxis Enum to select different axis based on the Enum