fix: #1538 add hasPrefix and hasSuffix template funcs

[maks56893]

[deefdragon]

As a side note, these differ from the sprig template functions (see #1536 where sprig is discussed) in parameter ordering. I believe this is to allow pipe-lining easier in the templates. In sticking with sprig ordering, vs making the template functions added better match their golang counterparts, I think I lean slightly towards the latter.