Implement hierarchy of metre classification

[shreevatsa]

Would be nice to say "upajāti" instead of hyper-specific names.

Example:

Input

भोगा न भुक्ता वयमेव भुक्ता-
स्तपो न तप्तं वयमेव तप्ता: ।
कालो न यातो वयमेव याता-
स्तृष्णा न जीर्णा वयमेव जीर्णा: ।।७।।

currently leads to:

[vvasuki]

instead of ->> as well as