Feature request: Secret Shamir

**Is your feature request related to a problem? Please describe.**
I am sensitive secrets (text/string) I would like to split in shamir (N by M parts) so to distribute in multiple safe.
I today use the code of https://github.com/iancoleman/shamir but it feel unsafe to reuse it in 10 years (I hope so !)

**Describe the solution you'd like**
I would love seeing CyberChef supporting Shamir creations and reconstructions like described above.

**Describe alternatives you've considered**
I mentionned https://github.com/iancoleman/shamir

**Additional context**
Thanks for such great work already !!