[5.3] [Events] Use event classes for Privacy plugins

[Fedik]

Summary of Changes

Updateprivacy plugins to use SubscriberInterface and an event classes.

Testing Instructions

Check the privacy "export request" still works.

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:
• 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

[exlemor]

I have tested this item ✅ successfully on 347c42e

I was able to test this successfully.

I did a full Privacy Consent user data export cycle.

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[exlemor]

I have tested this item ✅ successfully on 37e2fa4

Hi Fedik, it behaved the same before and after the PR Patch and the emails arrives in both cases.

That said, the link provided below in the email does not bring you to a page that you can enter the token in both cases if that matters.

1. Visit the following URL: https://pbf11.joom.ws/privacy-component/confirm?confirm_token=8917a9dc760171cdfcf4c24345fcb838

2. Copy your token from this email, visit the referenced URL, and paste your token into the form.
   URL: https://pbf11.joom.ws/privacy-component/confirm
   Token: 8917a9dc760171cdfcf4c24345fcb838

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[HLeithner]

This pull request has been automatically rebased to 5.3-dev.

[laoneo]

Thanks!