[MD]Change how dev tool/saved object/sample data consumes data source selector to use datasourcemanangement.ui.DataSourceSelector

[zhongnansu]

Currently, data source selector is consumed by 3 internal plugins, by import { DataSourceSelector } from data_source_management/public'. We need to update it to consume by calling datasourcemanangement.ui.DataSourceSelector, so that behavior of default datasource render, as well as hide/show local cluster could be consistent across everywhere.

• 1. dev tool console
• 2. saved object management (import feature)
• 3. sample data (home plugin)

[zhongnansu]

I'd like to work on this issue.

[zhongnansu]

for home plugin, currently there's no better way to add dataSourceManagement as an optional plugin, because it creates circular dependency.

home -> dataSourceManagement -> management -> home

cc: @BionIT

[BionIT]

Instead of adding datasourcemanagement as optional plugin, can we simply use the createDataSourceSelector function