[Multiple Datasource] Add empty icon and fix empty state handling

[BionIT]

Description

This change adds empty database icon to handle when there is no clusters to show, and I also changed the toast message and popover based on requirements.

Issues Resolved

Fixes #6565

Screenshot

emptystate.mp4

Testing the changes

The following steps were performed in the recording:

1. go to multi select example, and see toasts about empty state, click on icon will show popover, the link in the popover goes to data source management page
2. go to single select example, and see toasts about empty state, click on icon will show popover, the link in the popover goes to data source management page
3. go to single readonly example, and see toasts about empty state, click on icon will show popover, the link in the popover goes to data source management page
4. go to aggregated list all example, and see toasts about empty state, click on icon will show popover, the link in the popover goes to data source management page

Changelog

• skip

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

[codecov]

Codecov Report

Attention: Patch coverage is 51.85185% with 13 lines in your changes are missing coverage. Please review.

Project coverage is 67.71%. Comparing base (d2d410b) to head (1957f2b).
Report is 23 commits behind head on main.

Files	Patch %	Lines
...ce_aggregated_view/data_source_aggregated_view.tsx	0.00%	4 Missing and 1 partial ⚠️
..._multi_selectable/data_source_multi_selectable.tsx	0.00%	4 Missing and 1 partial ⚠️
...lic/components/custom_database_icon/empty_icon.tsx	50.00%	1 Missing ⚠️
...ublic/components/no_data_source/no_data_source.tsx	75.00%	1 Missing ⚠️
...ponents/toast_button/manage_data_source_button.tsx	66.66%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #6597       +/-   ##
===========================================
+ Coverage   32.93%   67.71%   +34.77%     
===========================================
  Files        2260     3403     +1143     
  Lines       45769    66588    +20819     
  Branches     7200    10820     +3620     
===========================================
+ Hits        15075    45091    +30016     
+ Misses      29984    18862    -11122     
- Partials      710     2635     +1925     

Flag	Coverage Δ
Linux_1	33.06% <ø> (+0.13%)	⬆️
Linux_2	55.65% <ø> (?)
Linux_3	45.20% <51.85%> (?)
Linux_4	34.94% <11.11%> (?)
Windows_1	33.08% <ø> (?)
Windows_2	55.62% <ø> (?)
Windows_3	45.21% <51.85%> (?)

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[ZilongX]

picking up latest main and re-running all checks