[WIP] Dataset navigator

[kavilla]

Description

Modifications onto the data set navigator from @sejli .

Issues Resolved

Screenshot

Testing the changes

Changelog

Check List

• All tests pass
  • yarn test:jest
  • yarn test:jest_integration
• New functionality includes testing.
• New functionality has been documented.
• Update CHANGELOG.md
• Commits are signed per the DCO using --signoff

[github-actions]

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[codecov]

Codecov Report

Attention: Patch coverage is 25.58140% with 32 lines in your changes missing coverage. Please review.

Project coverage is 67.67%. Comparing base (e64de15) to head (fcfddfa).

Files	Patch %	Lines
.../data/public/ui/dataset_navigator/fetch_indices.ts	11.11%	8 Missing ⚠️
src/plugins/data/public/ui/ui_service.ts	0.00%	5 Missing ⚠️
.../data_explorer/public/components/sidebar/index.tsx	33.33%	4 Missing ⚠️
src/plugins/data/public/ui/settings/settings.ts	0.00%	3 Missing ⚠️
.../data/common/search/search_source/search_source.ts	0.00%	2 Missing ⚠️
.../ui/dataset_navigator/create_dataset_navigator.tsx	0.00%	2 Missing ⚠️
...a/public/ui/dataset_navigator/fetch_datasources.ts	33.33%	2 Missing ⚠️
...ublic/ui/dataset_navigator/fetch_index_patterns.ts	33.33%	2 Missing ⚠️
...ns/data/public/ui/search_bar/create_search_bar.tsx	0.00%	2 Missing ⚠️
...plugins/data/public/ui/dataset_navigator/index.tsx	75.00%	1 Missing ⚠️
... and 1 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7348      +/-   ##
==========================================
- Coverage   67.70%   67.67%   -0.03%     
==========================================
  Files        3520     3523       +3     
  Lines       69700    69690      -10     
  Branches    11376    11372       -4     
==========================================
- Hits        47189    47165      -24     
- Misses      19716    19728      +12     
- Partials     2795     2797       +2     

Flag	Coverage Δ
Linux_1	33.18% <18.18%> (-0.01%)	⬇️
Linux_2	55.46% <0.00%> (-0.01%)	⬇️
Linux_3	43.29% <21.95%> (-0.02%)	⬇️
Linux_4	?
Windows_1	33.20% <18.18%> (-0.01%)	⬇️
Windows_2	55.41% <0.00%> (-0.01%)	⬇️
Windows_3	43.31% <21.95%> (-0.01%)	⬇️
Windows_4	34.67% <22.85%> (-0.04%)	⬇️

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