Test if a s2cd vector is within a date range or s2 cell union
Source: R/s2cd_within.R
s2cd_within.RdDates within the s2cd vector are compared to the date range,
inclusively. An s2_cell vector or s2_cell_union object
is used to test for intersection with the s2 cells.
If both a date range and s2 cell union are provided,
s2cd_within() will return TRUE only if both are within.