blob: better binary

blob brings binary to your shortcuts.

- blob encoding! a base256 encoding to make data unique and type safe.
- more formats! binary, hex, decimal, base32, base64 (and URL-safe), UTF-8, and ascii.
- type safety! blob actions use consistent return value labels and parameter labels to ensure you're using what you want, where you want it.
- no more encoding blunders! each action either performs text -> data or data -> text, so you never end up encoding your encoded string, or interpreting encoded data as text.
- keep track! the app keeps a record of the actions you run to view, share, and debug.
- more tools! Substring and Random Bytes because they're helpful.