Add support for executing CDI Lite extensions. Upgrade Weld to version 5

[manovotn]

Fixes #113

Upgrades Weld API and impl to version 5.
Introduces support for new CDI Lite extensions - since this container bootstraps Weld on its own, it also needs to register newly added portable extension through which we execute build compatible extensions.

We'll again need a release with this to be able to bump it on Weld side and test CDI TCK with this container (after jakartaee/cdi-tck#312 is merged).

[manovotn]

Actually, let me put this back to Draft state. I am thinking of one more needed fix.

[manovotn]

Also, the CI failure is because the Weld module is compiled with min level set to JDK 11.
I am not sure that is something we want/need or if we even care for 8 - personally I think we could drop it since EE 10 is going to be baseline 11 anyway.

[manovotn]

Actually, let me put this back to Draft state. I am thinking of one more needed fix.

I wanted to look into Weld bootstraps how to tweak that WRT custom stereotypes but turns out there isn't much I could do now (it is limited by code in Weld core).
Therefore, I'll put this back on ready for review.

I'll also add a commit that removes JDK 8 from the matrix of CI JDK versions on the basis of EE 10 requiring it anyway.