Docstrings for functions in point.py, grid.py are missing some details and are not PyLance compatible

[Tyler-g-hudson]

The following functions have non-PyLance compatible docstrings:

calc_solid_earth_tides_grid, calc_solid_earth_tides_point_per_day, calc_solid_earth_tides_point

This can make it difficult to use these functions in an IDE, as the non-standard docstrings will fail to format using the regular visualization tools.

In addition to this, the functions under point.py do not specify if lat/lon inputs are to be in degrees or radians, and default values for parameters that have them are not specified in the docstring. The return values in point.py could likewise use some clarification for new users.