Plugin to divide game objects into 2 using a box. Unity c#.

I need a plugin capable of Splitting the mesh of a gameObject into 2 using a box. A box will be used, which must be moved using the mouse, and using the mouse scroll to move forward and backward in the scene. You should also be able to enlarge the box using the M key and make it smaller using the P key. When you click, the split must be executed, the first mesh will be the one inside the cube and the second will be the one outside. The code must be able to split the mesh of any gameObject that has sub meshes, meaning that the mesh will have several materials. The order of the UVs must be maintained, for example, you have a die that has numbers from 1 to 6 on each face, that is, it has 6 submeshes, each mesh with 1 material, so when using the split box and separating the die In 2, only a red mesh should be added in the cut area of each mesh, the rest of the materials should be kept as they were, each face should maintain its original material. See the attached word file called "Cutting example". Each new mesh must be added to a new gameObjects and must have its collider correctly incorporated (it is recommended to use mesh collider) Splitting should also work when a mesh has its submeshes visually separated. The project must run on Unity Compiled for PC. Deliver the source code (which must also include the prefab of the mesh to be divided) in a .unitypackage package The source code delivered must be giving me all copyrights so that I can use it in my commercial projects as well as I can modify and sell the source code. The source code is needed as soon as possible, so there are only 2 days to complete it. Before approving the project I will test the package, I will export the 2 new divided meshes in OBJ format, then I will import them again, all this in Unity, and the materials must be correctly located. Please ask any questions.