What would you like to be added:

Add the Sprig library to templating to make commonly used templating functions available.

Function documentation: https://masterminds.github.io/sprig/

Integration documentation: https://pkg.go.dev/github.com/Masterminds/sprig

Why is this needed:

Sprig is the de facto standard library for templating functions in Go templating. This solves common issues observed when writing templates.

In my case, I currently need the coalesce function, but frequently also use other Sprig functions.