PHPORM-146: Add override attribute everywhere

[paulinevos]

Closes PHPORM-146

Adds the override attribute in every class that extends a Laravel base class, so that PHP will show errors if ever the base methods are renamed or removed.

Also adds in a few corrections to phpdoc declarations where necessary.

Checklist

• Add tests and ensure they pass (not applicable)

[paulinevos]

Apparently git commit -m does not like backticks... will rectify commit messages I guess.

[GromNaN]

This is huge, and will be very helpful to detect when a parent method is removed.
I spotted some tiny changes.

[GromNaN]

Apparently git commit -m does not like backticks... will rectify commit messages I guess.

We squash-merge. So you can refine the commit message in the merge box in GitHub.

[GromNaN]

Without @inheritdoc you lose the phpdoc for the parameter and the return type that are described in the parent method; isn't it?

[paulinevos]

Hm maybe I misunderstood your previous comment, but didn't you say there's no point in just having inheritdoc when we already have #[Override]?

[paulinevos]

Ah wait, you said "when a method is not documented". So you're saying it won't parse the parent's phpdoc in this case because there is a comment.

I think the comment is identical to the parent's, so I should probably just remove it then