[FEAT] Avoid the usage of `sudo`

[MoisesGSalas]

Is your feature request related to a problem? Please describe. Currently tvm adds the tutor command to your PATH by symlinking the tutor_switcher script to /usr/local/bin/tutor. This requires sudo permissions, which seems excessive, and the global tutor can cause confusion when using tutor in a virtualenv outside of tvm. I would prefer, If I were to install tvm on a virtualenv, to limit the tvm managed tutor command to the scope of that virtualenv.

Describe the solution you'd like I think we can use the script option from setup.py to create a tutor-shim that calls the tutor switcher (essentially a shell script). This script will be added to the PATH automatically when installing the package and should fill the same role.

Describe alternatives you've considered None

Additional context I have not tested this, but I think it could work.