Adopt Liberty Maven Plugin 3.6 + Liberty Gradle Plugin 3.4 + Auto-Gen of Feature Config

[yeekangc]

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Adopt at least 3.6 of LMP and 3.4 of LGP and update the template to depend on auto-gen of feature config capability to generate the feature config in server.xml.

Should only do this after Jakarta EE 9/9.1 + MicroProfile 5 are supported by the auto-gen capability.

Cc @TrevCraw

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Simplified developer experience and usage of latest capabilities for developers.

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[gkwan-ibm]

If set no feature in server.xml and let LMP to generate, the starter should smart enough to determine which level of EE and MP that the LMP can support. In case users select the versions that LMP does not support, server.xml should provide the features list.

[gkwan-ibm]

I doubt that the auto-gen solution cannot 100% address the performance issue #108 of using latest/huge ee and mp features for dev mode.

[kinueng]

The OL Starter is currently on:
LGP 3.5.2
LMP 3.7.1

Next step is to look if auto-gen can be enabled for the zips produced by the OL Starter