Switch away from pip3 for module installation and add license

pkg.info

@@ -1,10 +1,10 @@
 name: python-jinja
 description: A simple pythonic template language written in Python
 version: 3.1.3
-revision: 2
+revision: 3
 url: https://jinja.palletsprojects.com/en/3.1.x/
 license: BSD-3-Clause
 architecture: any
-depends: ["python-markupsafe","python3"]
-make_depends: ["python-markupsafe","python3","python-setuptools","python-wheel"]
+depends: ["python3","python-markupsafe"]
+make_depends: ["python-build","python-flit-core","python-installer","python-setuptools","python-wheel"]
 type: source