feat(APP-3614): Support dropdown-item actions on ProposalActions, update DataListItem to support standalone usage

[cgero-eth]

Description

• Support dropdownItems property on ProposalActions to display custom actions
• Update DataListItem component to support button/link rendering and standalone usage
• Update DropdownItem style to correctly render items with icons aligned on the left

🟥 The only breaking change of this PR would be that if some app component is extending a data-list-item property interface (IDataListItemProps, IVoteDataListItemProps, ..), the related props need to be changed from interface to type

Task: APP-3614

Type of change

• New feature (non-breaking change which adds functionality)

Checklist:

• I have selected the correct base branch.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• Any dependent changes have been merged and published in downstream modules.
• I ran all tests with success and extended them if necessary.
• I have updated the CHANGELOG.md file in the root folder of the package after the [UPCOMING] title and before
  the latest version.
• I have tested my code on the test network.

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[thekidnamedkd]

Looks good! I saw 64 files change and my eyes popped, but I see it's a lot of pattern adjustment and storybook cleanup. Thanks for the implementation! Left a few Q's as always. :)

[thekidnamedkd]

All good! TAction makes sense. I was thinking about that when doing the ProposalActions about how to make it more general and flexible as actions could be anything down the road.

[thekidnamedkd]

Suggested change

	* Items to be displayed insdie a dropdown for each proposal action (e.g. remove from list, move up, etc..)
	* Items to be displayed inside a dropdown for each proposal action (e.g. remove from list, move up, etc..)