[5.1] Convert mod_version to service provider

[joomlaweby]

Summary of Changes

Converts the version administrator module to service provider.

Testing Instructions

1. Make sure you have administrator module mod_version published
2. You should see module output

Actual result BEFORE applying this Pull Request

Module works as expected

Expected result AFTER applying this Pull Request

Module works same way as before applying pull request

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:

• No documentation changes for manual.joomla.org needed

[fgsw]

I have tested this item ✅ successfully on 366e884

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[ceford]

I have tested this item ✅ successfully on 6be703c

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[richard67]

@fgsw Could you test this PR again? Thanks in advance.

[fgsw]

@fgsw Could you test this PR again? Thanks in advance.

No re-test. Reason: comment.

[richard67]

@fgsw I've restored the result from your previous test in the issue tracker since the changes after that were code style only.

[richard67]

RTC

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[LadySolveig]

Thank you @joomlaweby for your work and your endurance!
I am of course also very very happy and grateful for the tests @fgsw @ceford and the cs-fix @richard67