Add a cleanup SPI for the REST Client #46761

Job	Run time
Initial JDK 17 Build	11m 14s
Attach pull request number	2s
CI Sanity Check	32s
Calculate Test Jobs	11s
JVM Tests - JDK 17	49m 58s
JVM Tests - JDK 21	51m 59s
JVM Tests - JDK 17 Windows	59m 35s
Maven Tests - JDK ${{ matrix.java.name }}	0s
Devtools Tests - JDK ${{ matrix.java.name }}	0s
Gradle Tests - JDK ${{ matrix.java.name }}	0s
Kubernetes Tests - JDK ${{ matrix.java.name }}	0s
Quickstarts Compilation - JDK 17	6m 22s
Native Tests - Main	2m 10s
MicroProfile TCKs Tests	11m 27s
Native Tests - Data3	5m 32s
Native Tests - Virtual Thread - Main	3m 57s
Native Tests - Data4	5m 3s
Native Tests - Virtual Thread - Messaging	10m 18s
Native Tests - Messaging1	22m 54s
Native Tests - Security2	8m 48s
Native Tests - Security3	5m 1s
Native Tests - Cache	13m 19s
Native Tests - HTTP	23m 0s
Native Tests - Misc1	4m 19s
Native Tests - Misc3	7m 23s
Native Tests - Misc4	9m 1s
Native Tests - gRPC	5m 44s
Upload build stats to collector	0s
Build report	31s
	5h 18m 20s

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