Add Sentinel-1 local incidence angle

[egagli]

Description

The Sentinel-1 class should have the ability to easily get S1 LIA maps. I have a separate repo that already does something like this.

Potential data sources:

my generate_sentinel1_local_incidence_angle_maps repo
https://github.com/egagli/generate_sentinel1_local_incidence_angle_maps

Maybe calculate and then pull from GEE?
https://gis.stackexchange.com/questions/352602/getting-local-incidence-angle-from-sentinel-1-grd-image-collection-in-google-ear
https://github.com/palubad/LC-SLIAC/blob/master/javascript_codes/LC-SLIAC_global.js
https://developers.google.com/earth-engine/guides/sentinel1

From sentinelhub?
https://docs.sentinel-hub.com/api/latest/data/sentinel-1-grd/examples/
https://docs.sentinel-hub.com/api/latest/data/sentinel-1-grd/#available-bands-and-data
https://docs.sentinel-hub.com/api/latest/api/catalog/examples/
https://sentinelhub-py.readthedocs.io/en/latest/examples/data_collections.html

From asf?
https://hyp3-docs.asf.alaska.edu/guides/rtc_product_guide/

Example

Would be nice to have something like...

s1 = easysnowdata.remote_sensing.Sentinel1(
    bbox_input=bbox,
    start_date="2022-07-21",
    end_date="2022-07-31",
    resolution=80,
)

s1.get_lia()

s1.lia