Register Advance Settings, Data Source management,Index Pattern management and SavedObject management as standalone app, retire dashboard management

[raintygao]

Description

1. Register Advance Settings, Data Source management, Index Pattern management and SavedObject management as standalone app
2. Retire dashboard management

Issues Resolved

Screenshot

Testing the changes

Check List

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

[codecov-commenter]

Codecov Report

Merging #208 (75cdf70) into workspace-pr-integr (5bc2ddf) will increase coverage by 0.01%.
Report is 1 commits behind head on workspace-pr-integr.
The diff coverage is 61.29%.

@@                   Coverage Diff                   @@
##           workspace-pr-integr     #208      +/-   ##
=======================================================
+ Coverage                66.46%   66.48%   +0.01%     
=======================================================
  Files                     3408     3412       +4     
  Lines                    65148    65234      +86     
  Branches                 10430    10456      +26     
=======================================================
+ Hits                     43303    43370      +67     
- Misses                   19227    19260      +33     
+ Partials                  2618     2604      -14     

Flag	Coverage Δ
Linux_	66.06% <61.29%> (+0.01%)	⬆️
_1	34.82% <26.31%> (+<0.01%)	⬆️
_2	55.45% <0.00%> (?)
_3	44.50% <44.44%> (-0.09%)	⬇️
_4	34.84% <55.55%> (-0.05%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
src/core/public/core_app/errors/url_overflow.tsx	88.23% <ø> (ø)
...rc/core/public/core_app/errors/url_overflow_ui.tsx	66.66% <ø> (ø)
...re/server/ui_settings/saved_objects/ui_settings.ts	33.33% <ø> (ø)
...ement_app/components/page_wrapper/page_wrapper.tsx	100.00% <100.00%> (ø)
...nt/public/components/page_wrapper/page_wrapper.tsx	100.00% <100.00%> (ø)
src/plugins/data_source_management/public/types.ts	100.00% <ø> (ø)
...plication/components/top_nav/open_search_panel.tsx	28.57% <ø> (ø)
...pplication/components/top_nav/open_search_panel.js	57.14% <ø> (ø)
.../public/application/components/new_theme_modal.tsx	33.33% <ø> (ø)
...lic/components/getting_started/getting_started.tsx	85.71% <ø> (ø)
... and 14 more

... and 36 files with indirect coverage changes

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