ENH: started coding S2 planetary fetch.

TimeSeries/providers.py

+import planetary_computer
+from pystac_client import Client
+import planetary_computer as PC
+import rasterio
+from osgeo import ogr
+from pyproj import Transformer as T
+
+def get_s2_from_planetary(shp, datetime):
+
+    ds = ogr.Open(shp)
+    ly = ds.GetLayer(0)
+    xt = ly.GetExtent()
+    shp_srs = int(ly.GetSpatialRef().GetAuthorityCode(None))
+
+    api = Client('https://planetarycomputer.microsoft.com/api/stac/v1', modifier=planetary_computer.sign_inplace)