* WIP try testing hash command
Ensure test worked
fmt
WIP get it working for other types of base64
Use optional named arg
WIP
* rebased and refactored a little with encoding and decoding
Fix some typos
Add some more charactersets
refactor several args into the encoding config struct and fix character_set arg. It needs to match the field
Add main hash command so it can be found via help
Added tests for running the whole pipeline
* add test case to cover invalid character sets
* clippy and fmt
