[feature] My project need to config multiple root path

[dactac]

It's a big project with multiple templates folder in different directory.
It's ok when I use the top folder at first, but when sub folder templates has other dependencies and use a absolute path (legacy code, can't change). It can't work.

code like this:
{% extends "page/base.html" %}

throws can't find error

[int64ago]

Clound you give a minimum demo?