extents and CLI updates

[erialC-P]

This PR makes three updates:

1. updates extents.py 'load_connectivity_mask' to create a cost-distance coastal mask using the nodata values from dem_h in SRTM as start values and elevations from dem_s layer as costs values
2. edit the inland water class in the extents func to revert to ocean and coastal water class if it is connected to the coastal mask
3. change the 'load_connectivity_mask' defaults in CLI to apply mangroves and HAT to the cost-distance coastal mask

Additional changes from Robbi:

Major changes:

• Updated default connectivity mask threshold from 100 to 50 (need to test this)
• Added coastal connectivity mask to new qa_coastal_mask QA layer
• Updated workflow to use new GMW mangrove extents layer
• Changed dask chunking from {"x": 1600, "y": 1600} to {"x": 3200, "y": 3200} to improve data loading

Minor changes:

• Simplifed extents code to apply class_connection directly to mostly_wet layer
• Updated Python packaging to use DEA package version of hdstats to ensure proper thread parallelisation
• Made geomedian eps parameter configurable via the CLI

[github-actions]

For full integration test results, refer to the Tests directory README.

[robbibt]

Have made some additional changes to this PR:

Major changes:

• Updated default connectivity mask threshold from 100 to 50 (need to test this)
• Added coastal connectivity mask to new qa_coastal_mask QA layer
• Updated workflow to use new GMW mangrove extents layer
• Changed dask chunking from {"x": 1600, "y": 1600} to {"x": 3200, "y": 3200} to improve data loading

Minor changes:

• Simplifed extents code to apply class_connection directly to mostly_wet layer
• Updated Python packaging to use DEA package version of hdstats to ensure proper thread parallelisation
• Made geomedian eps parameter configurable via the CLI