[FEATURE REQUEST]Add Customizable Key Remapping to the Editor via a Config File

[kevinyippp]

As the key rebind feature in the Editor now is very limited, whenever I'm using the editor, I often want to move the camera while holding down the middle mouse or right mouse button, but I frequently end up panning away from my orthographic view instead. This leads to frustration as I accidentally pan the camera when I don’t intend to, slowing down my workflow.

I'd like the ability to rebind any key or map any buttons in the editor using a centralized configuration file (e.g., JSON) to store these settings, allowing users to adjust them even outside the editor.