Feature request: Add Crockford's Base32 Alphabet

**Is your feature request related to a problem? Please describe.**
Not really, however this would be a bit more convenient.

**Describe the solution you'd like**
Add [Douglas Crockford's base32 alphabet](https://www.crockford.com/base32.html) to the base32 operations

**Describe alternatives you've considered**
You can easily add the base32 alphabet (0-9A-HJKMNP-TV-Z) for encoding, but for decoding it requires some find / replace operations and a to upper case operation beforehand because multiple symbols can be decoded into the same character to prevent confusion (i.e. `0` and `O` are interpreted the same and 1, I, and L (all cases) are interpreted the same).

**Additional context**
N/A

The issue names no files or tests. Start by locating the base32 operations and read how existing alphabets handle encoding and decoding; use the linked Crockford specification for the alphabet and aliases. Done means Crockford Base32 is available for both encoding and decoding, including its equivalent symbols and case handling.

Written by the indexing model from the issue text.