SASL_SSL OAUTHBEARER support for high level consumer

[Rastusik]

This PR addresses #580 .

I also extracted the main logic into a separate oauthbearer.c file, so it's not copy pasted into 2 places.

I will be happy for any help or support or feedback, since this is the first time I'm working on a PHP extension.

EDIT: I also needed to implement the poll() method to KafkaConsumer because I had problems with calling getMetadata() and getCommittedOffsets().

[Rastusik]

hey @arnaud-lb Is there any way to make the pipeline run? Is there anything else that needs to be done to move forward with this PR? No pressure, I just am trying to figure out how things work here.

[oaattia]

Waiting for the one to be merged soon.

[Rastusik]

@oaattia Is there anything I can do to speed up the PR process?

[oaattia]

I don't know, I just need this feature :)
may be @arnaud-lb can help with that

[arnaud-lb]

Thank you @Rastusik!

I fixed the pipeline and took the liberty of fixing some minor issues.

The new test seems to be unstable, could you check?

[Rastusik]

@arnaud-lb thank you for the fixes.
Regarding the test problems, I am not really able to reproduce them in my local setup (I tried with PHP 8.2). Do you have any hints how to reproduce the environment/problems or should I just try to use all the scripts that GH actions is using and run them in the same environment? But still I don't understand how I'm not getting any errors with php 8.2.0 and librdkafka 2.3.0-1build2

[Rastusik]

I even manually reproduced the github ci tests script locally and I'm still not getting any error compared to the ones that are here. tested in ubuntu 24.04 docker image

[arnaud-lb]

Turns out it was a timeout issue. I've increased the timeout (e8a5651 / b59da85) and tests are passing now.

[arnaud-lb]

Thank you @Rastusik!

[Rastusik]

Thanks a lot @arnaud-lb ! :)

[oaattia]

Thanks @arnaud-lb
I'm eager for the next release to start using this!