Add PHP 8 support

[malberts]

• Drops support for < PHP 8
• Adds CI for PHP 8.0 and 8.1
  • PHP 8.2 had some failures, but since MW is unlikely to work with 8.2 I just removed it for now
  • Run result on my fork: https://github.com/malberts/http-request/actions/runs/3656906167

This primarily addresses SemanticMediaWiki/SemanticMediaWiki#5346

[malberts]

I realised later there was already a PR doing some of these updates: #12
However, in my case I dropped PHP 7 (the other PR supports 7.3+). Since PHP 7.4 is now completely EOL, I think this is a good time to make a breaking major release (v2).

[JeroenDeDauw]

Uh oh. Dunno if anyone has write or admin on this repo. @kghbln are you able to merge this PR?

[kghbln]

No, there is nobody left in onoi who can merge. Last time this happened for this org the respective lib was moved to SMW core.

[JeroenDeDauw]

That won't work for this repo since there are users besides SMW itself. So we need to create a copy of the repo somewhere. Perhaps on SMW org, or the ProfessionalWiki one?

[kghbln]

Perhaps on SMW org, or the ProfessionalWiki one?

Yeah. This one looked a bit more like a general lib to me. I think that SMW is the more suitable org here.

[JeroenDeDauw]

Repo ready here: https://github.com/SemanticMediaWiki/http-request

@malberts you have admin on it

So far I just pulled and pushed master

We will also need new package name, and use the replace section like at https://github.com/JeroenDeDauw/PsrLogTestDoubles/blob/master/composer.json#L3-L5

[malberts]

Replaced by SemanticMediaWiki/http-request#1