Feature: Add obscure binary encoding formats for UTF-32 like Base65536 and Ecoji

[dghelm]

Describe your feature or enhancement suggestion
Additional encode and decode bricks for obscure binary encoding formats exploiting UTF-32's large character set. The most interesting to me are Ecoji (Base1024 using emojis, JS lib here) and Base65536.

Base2048 (targeting twitter data efficiency) and Base32768 (possible in UTF-16) are also of interest.

Describe a concrete use case
Developers wanting to experiment with binary data transmission through string-encoded channels.