I need a very simple Add-on for Blender

Job ID: 32013540

Budget: $10 – $30 USD

I am looking for an Add-on for Blender that will allow me to proportionally change all 3 dimensions of a mesh at once, by entering the desired size value of any single dimension.

Since I am in the process of learning Blender Python myself, I would prefer detailed comments explaining each part of the code. I also have some ideas in mind for further improvements once the initial goal is running smoothly, which I would prefer to handle as a separate project.
Related categories: Python Scripting Blender