[Workspace][Feature] Update application category and retire dashboard management section

[raintygao]

Feature includes

• Rename Opensearch Dashboards category to Library.
• Register Advance Settings as standalone application.
• Register Data Source management as standalone application.
• Register Index Pattern management as standalone application.
• Rename SavedObject managementto Manage library as standalone application.
• Retire dashboard management section.

Additional context
4944
This feature is a regular update and will take effect regardless of whether the workspace feature flag is enabled or not.

Screenshot

Before change

After change

[raintygao]

Please add workspace label and assign this issue to @SuZhou-Joe , @Hailong-am and me.

[xluo-aws]

@raintygao , Tianyu, could you attach a screen snapshot to this ticket?

[raintygao]

@raintygao , Tianyu, could you attach a screen snapshot to this ticket?

Thanks for catching, updated.

[kavilla]

Please add workspace label and assign this issue to @SuZhou-Joe , @Hailong-am and me.

Can they comment on this issue, otherwise won't be able to assign to them.

[Hailong-am]

would be better if we have screenshot before change, so that we can compare and know where is the change

[SuZhou-Joe]

I am in charge of the part of move data source management/advanced settings/saved objects management out of dashboard management.

[kgcreative]

Here's before/after screenshot of the tactical changes to categories we need to make. Please note that this is aligned to the way our menu works in the OUI webstie, however, we may need to extend the API of the OSD menu in order to achieve this. @kavilla -- FYI

Current Category	Proposed Category	Notes
OpenSearch Dashboards	OpenSearch Dashboards	This gets simplified to Home, Data Explorer, Library
Stack Management > Saved Objects	OpenSearch Dashboards > Library
Observability	Observability
OpenSearch Plugins	–	(Deprecate the section)
–	Security Analytics	(Move Security Analytics pages under this heading. Short term, let's deep link to the appropriate Sec A plugin page.)
–	Search	(Move Search Relevance here)
–	Tools	(Move Alerting, Anomaly Detection, Reporting, Dev Tools, Query Workbench here)
Management	Management	(Move Dashboards Management > Advanced Settings to Advanced Settings, move Data Source Connections, Index patterns, Saved Objects to Library.)

[ghost]

I like this very much because that way I dont have to go Dashboards Management before I can see the index patterns! works for me!

[raintygao]

@kgcreative Hi Kevin, are the changes proposed in this issue still latest?

[lauralexis]

@raintygao - @kgcreative and I are working on testing the design proposed in this issue, and will be making some changes to it. We expect to have the new navigation structure solidified shortly. I can share the updated design with you here when it is ready.