Please add the sagemath module into moonbase

[lhw828]

Please add the sagemath module into moonbase,I tried many times but never succeeded.

https://www.sagemath.org/

https://www.sagemath.org/download-source.html

[stumbles]

Keep working at it and when you have it along with about another 20 or so other modules it depends on I will commit your PR.