Serve time rdkit and other package installation

[Abellegese]

Thank you for taking your time to contribute to Ersilia, just a few checks before we proceed

• [ ] Have you followed the guidelines in our Contribution Guide
• [ ] Have you written new tests for your core changes, as applicable?
• [ ] Have you successfully ran tests with your changes locally?

Description

To make the run CLI even faster, we can install packages at serve time. This PR enable package installation at the serve time that enable fast run CLI session.