Add Dict and List sprig functions for template generation

[deefdragon]

This is a starter on what functions to add from the sprig template funcs. This resolves parts of #1536, as it provides atleast a starting point.

This is a draft for conformation that these are good. If this looks good, I will go through and add the appropriate tests as well as add documentation for the functions that are listed and the existing functions.

I think that I will add fail as well if there is no push to not do so. It would assist users id doing their own schema/extension validations IE #1554.