QuarkusComponentTest: add basic support for nested test classes #1879

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CI Sanity Check	31s
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Initial JDK 17 Build	1m 9s
Calculate Test Jobs	1s
${{ matrix.java.name }}	1s
Kubernetes Tests - JDK ${{ matrix.java.name }}	1s
Devtools Tests - JDK ${{ matrix.java.name }}	1s
Gradle Tests - JDK ${{ matrix.java.name }}	1s
Maven Tests - JDK ${{ matrix.java.name }}	1s
Quickstarts Compilation - JDK ${{ matrix.java.name }}	1s
MicroProfile TCKs Tests	1s
Native Tests - ${{ matrix.category }}	1s
Native Tests - Virtual Thread - ${{ matrix.category }}	1s
Upload build stats to collector	1s
Build report	33s
	2m 41s

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