Add GCPGeoBox

[Kirill888]

Generalizes concept of GeoBox to include any bounded pixel plane with some well-defined mapping between pixel and world planes. Original GeoBox is a version of that with linear mapping pix<->wld.

This PR moves common properties of "geoboxes" into GeoBoxBase and adds GCPGeoBox class that handles ground control point based geoboxes.

• xx.odc.geobox will now return GCPGeoBox for GCP sources loaded with rioxarray
• xr_coords|xr_zeros can create xarrays from GCPGeoBox
• xr_reproject accepts GCP registered arrays as sources, but not as destinations as this is not exposed in rasterio
• xx.odc.add_to(map) also works for GCP based sources
• overlap computation logic has been updated to work either geobox type
• moved GeoBox html_repr logic into a separate class and file to enable sharing with GCPGeoBox

Other coincidental changes

• Geometry can now be constructed from geojson
• Adding more tests
• Fix .dropna for polygons with holes

[codecov[bot]]

Codecov Report

Merging #62 (3a60b2c) into develop (da8fbd3) will increase coverage by 0.41%. The diff coverage is 97.91%.

@@             Coverage Diff             @@
##           develop      #62      +/-   ##
===========================================
+ Coverage    97.42%   97.83%   +0.41%     
===========================================
  Files           22       23       +1     
  Lines         3179     3515     +336     
===========================================
+ Hits          3097     3439     +342     
+ Misses          82       76       -6     

Impacted Files	Coverage Δ
odc/geo/_map.py	93.84% <73.33%> (-6.16%)	:arrow_down:
odc/geo/math.py	97.58% <89.83%> (-2.42%)	:arrow_down:
odc/geo/ui.py	98.14% <98.88%> (+0.81%)	:arrow_up:
odc/geo/geobox.py	98.60% <99.26%> (+0.73%)	:arrow_up:
odc/geo/_xr_interop.py	99.71% <100.00%> (+0.36%)	:arrow_up:
odc/geo/gcp.py	100.00% <100.00%> (ø)
odc/geo/geom.py	100.00% <100.00%> (ø)
odc/geo/overlap.py	100.00% <100.00%> (ø)
odc/geo/types.py	99.53% <100.00%> (ø)
odc/geo/warp.py	78.57% <100.00%> (+14.50%)	:arrow_up:
... and 5 more

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[github-actions[bot]]

🚀 Deployed on https://63020a702a41dd754ddb1a25--odc-geo-docs.netlify.app

[github-actions[bot]]

🚀 Deployed on https://630210f5c261ee7df305577e--odc-geo-docs.netlify.app