Support for other classes for spatial data + lower level access

[sigmafelix]

• To make the package future-proof, the package should be flexible to accommodate new spatial data I/O and processing packages that will be developed in the future.
• For good performance, lower level access for data I/O and primitive operations will be helpful.

[sigmafelix]

https://github.com/NIEHS/chopin/blob/f855f2ac59006812740a61b53097744fa3d036e6/R/scale_process.R#L582-L621

This function can map generic functions' arguments that are not x or y, which are standard argument names for using par_* functions, into x or y. Users will take advantage of this function to parallelize workflows using spatial data analysis packages based on sf or terra objects.

Along with S4 method expansion with proper signatures, maintainers / contributors can easily expand chopin functions to be compatible with new spatial data classes in the future.