Extra modifiers

[joe-pll]

Is your feature request related to a problem? Please describe.
Hi, in my company we're using your project. When we make the templating to produce the spec files for ArgoCD we fetch secrets for the database connections, etc. Sometimes these secrets need modifications such as htpasswd value or HTTP URL encoding, etc.
I was wondering, before I start working on it, if you're open to the idea of adding more modifiers to the project.
At the moment it's not a big problem, but annoying enough since we have save different formats of the secret for every utilization.

Describe the solution you'd like
I would like to add some more modifiers such as sha512sum, urlEncode, htpasswdSHA1, etc.
Do you think you'd like to have those?

Thanks a lot in advance!