[5.0][Events] Privacy event classes

[Fedik]

Summary of Changes

Implementing Event classes for Privacy events.

Affected events:

• onPrivacyCollectAdminCapabilities
• onPrivacyCheckPrivacyPolicyPublished
• onPrivacyExportRequest
• onPrivacyCanRemoveData
• onPrivacyRemoveData

Testing Instructions

Use Privacy features, export request, delete reques, capabilities overview

Actual result BEFORE applying this Pull Request

Works

Expected result AFTER applying this Pull Request

Works

Link to documentations

Please select:

• Documentation link for docs.joomla.org: https://docs.joomla.org/Plugin/Events#Privacy
• No documentation changes for docs.joomla.org needed
• Pull Request link for manual.joomla.org: New Event classes Manual#177
• No documentation changes for manual.joomla.org needed

[HLeithner]

please resolve conflict

[HLeithner]

for later, have we a chance to deprecate this? if or if not can you add this to the migration documentation to not use "user" plugins for privacy stuff so we can remove this import here in Joomla 7.0

[Fedik]

I not sure what a reason for these imports, But I think we can just add deprecation here. It is our module.
And 'user' group should be already imported, while login.

[HLeithner]

it has a description 2 lines above that's it's b/c for < 3.9 ;-)

I'm not sure if we always import user plugins for each page load?

[Fedik]

hmhm, probably not, I thought it always up with onUserAuthorisation,
but not sure currently

[HLeithner]

Merging this as with code review and based on the other similar PRs, before beta1 to get enough feedback for final release.