Add class to mentions to differentiate from other toots

[Colin-Marvin]

Fix #8424
Appreciate any constructive criticism, this is for a university project, and is also my first time attempting to contribute to open source as a whole.

[shleeable]

Thank you for your PR.

[renchap]

Your change does not only add a class for mentions, but it also changes how they are styled. Is this expected?

[Colin-Marvin]

No, it's merely a placeholder with the goal to get feedback on how to actually connect it to custom CSS. I was attempting to do something along the lines of #8399, but it seems the admin side of this is different than user.

[ClearlyClaire]

Hi! Thank you for your contribution.

Unfortunately, I don't understand the use case of the linked issue: I don't understand if they want the mention themselves to have a specific class, or the post container itself. I also don't understand if they want this for every mention or for mentions to the author. I think, with the context that they have given, that what they want is not mention links to have a specific class, but post containers for mention notifications to have such a class.

We could ask for clarification, but given how old the issue is, I'm not sure we will have a reply.

No, it's merely a placeholder with the goal to get feedback on how to actually connect it to custom CSS. I was attempting to do something along the lines of #8399, but it seems the admin side of this is different than user.

Mastodon has currently no facility for user-set CSS (beyond admins being able to set custom CSS for the whole site), and I'm not sure trying to do this is a good idea, I think that use case is best served by browser extensions dedicated to this. Furthermore, I think the original issue is not about that, but just about having some CSS class to select on. Therefore I would leave out any actual CSS change from this PR!