introduce curried form for startswith and endswith

[oxinabox]

For some functions, E.g.

• in(item, collection) where have in(collection) = item -> in(item, collection)
• lessthan(a, b) we have lessthan(b) = a -> lessthan(a, b)
• isequal(a, b) we have isequal(b) = a -> isequal(a, b)

We have a whole bunch of these implemented via Base.Fix2.
They are useful for using with filter.

I propose we add a few more:

• startswith(haystack, needle) giving startswith(needle) -> startswith(haystack, needle)
• endswith(haystack, needle) giving endswith(needle) -> endswith(haystack, needle)

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This is part of a series of issues relating to invenia/Wrangling.jl#3
Will link others below for cross referencing.
and removing its type-piracy
#35031
#35033

[KristofferC]

Dup of #33193