Include  RedisBloom/t-digest-c as part of implementations in Other Languages
Include  RedisBloom/t-digest-c as part of implementations in Other Languages

This PR makes reference to [t-digest-c](https://github.com/RedisBloom/t-digest-c) as part of [RedisBloom](https://redisbloom.io/).
tdunning/t-digest,tdunning/t-digest