CMR-10132: Fix stac-browser Stac item Search unmapped CMR keys

[eudoroolivares2016]

Overview

What is the feature?

Update sorting maps to include a datetime mapping to CMR's startDate field. Refactor sortKeys to map to CMR fields depending if the search is for items or for collections so that we can sort by id field accordingly

What is the Solution?

Adding search context to the query param and a util to direct the request to the correct CMR key field. Also adding a mapping for the datetime field

What areas of the application does this impact?

Testing

Reproduction steps

• Environment for testing:
• Collection to test with:

1. Navigate to https://radiantearth.github.io/stac-browser/#/external/http:/localhost:3000/stac/ARCTEST ensure that using the Id for the collection search sorting works
2. ensure that using the Id for the items search sorting works
3. Ensure that sorting for the collection search sorting by Date and time works as expected
4. Ensure that sorting for the item search sorting by Date and time works as expected

Attachments

Please include relevant screenshots or files that would be helpful in reviewing and verifying this change.

Checklist

• [x] I have added automated tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 88.22%. Comparing base (7a0fcb8) to head (960fc73).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #370 +/- ## ========================================== + Coverage 88.05% 88.22% +0.16% ========================================== Files 24 24 Lines 1164 1180 +16 Branches 256 261 +5 ========================================== + Hits 1025 1041 +16 Misses 139 139 ```

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