Add more meters

The JSON file now contains every samavrtta meter listed in M. R. Kale's
A Higher Sanskrit Grammar, which itself draws from the Vrttaratnakara
and the Chandomanjari.
Add more meters

The JSON file now contains every ardhasamavrtta meter in M. R. Kale's
A Higher Sanskrit Grammar, which itself draws from the Vrttaratnakara
and the Chandomanjari.