Allow running Baserow under an URL prefix
Feature description
Currently Baserow can only be run under a subdomain. Instead if someone wants to run Baserow say at https://mywebsite.com/baserow
this is impossible.
Instead we should be able to use the following nuxt property https://nuxtjs.org/docs/configuration-glossary/configuration-router/#base and also configure our frontend/backend to detect when running with a prefix (by parsing BASEROW_PUBLIC_URL perhaps or a new env var BASEROW_URL_PREFIX not sure).
Examples
https://community.baserow.io/t/how-to-mount-baserow-to-url-path-e-g-https-mydomain-com-baserow/1269