[Task] Create an Python app-lib

[taorepoara]

What should be done

Create a Lenra Python lib (just like https://github.com/lenra-io/app-lib-js) and integrate it to the Python template.

Technical recommandation

The lib should implement a Python server to be faster. Explore those projects:

• https://lab.nexedi.com/bminusl/cython-lwan
• https://fastapi.tiangolo.com/

Ecological concerns

The server should load less RAM since it can have cache.
A faster response time probably use less CPU