Additional aperture geometry support

Currently just uses `Photometry.Aperture.CircularAperture` [by default](https://github.com/JuliaAstro/Astroalign.jl/blob/ee973484796fbdaa38759cc13aa6980f012a83b1/src/Astroalign.jl#L73). Generalize to other [`Photometry.Aperture.AbstractAperture`](https://juliaastro.org/Photometry/stable/apertures/apertures/#Photometry.Aperture.AbstractAperture)