Add Caret/M-decode Operation

[Kalkran]

Adds a Caret/M-decode operation.
This reverses the encoding that is done by (for example) cat [-v|--show-nonprinting], which is sometimes the only encoding option in limited environments.
Except for the gist linked in the source, there aren't really any easy ways to decode these strings.

[a3957273]

Hey @Kalkran. Please can you add the test file to tests/operations/index.mjs, otherwise your tests don't actually run!

[a3957273]

Also, when I merged in master, I messed up a comma in operations and can't seem to add it locally anymore. I think you might have turned off commits on your branch? You need to add a comma to src/core/config/Categories.json line 73.

[Kalkran]

Hey, thanks for having a look. I've added the comma and added the test to the index - also fixed the test now it actually runs. Should be ready to merge now.
I'm not sure if I turned off commits on my branch, it's a simple fork - but I have neglected to switch to a feature branch on my side so it's under master, that may be the issue.

[a3957273]

Thanks, this change looks really useful! Wasn't a method I'd even heard of before, but given the ubiquity of cat can imagine it's a great data tool.