Add option to configure wait after teardown

...quarkus/src/main/kotlin/theodolite/benchmark/Benchmark.kt

...rc/main/kotlin/theodolite/benchmark/BenchmarkExecution.kt

...c/main/kotlin/theodolite/benchmark/KubernetesBenchmark.kt

...lin/theodolite/benchmark/KubernetesBenchmarkDeployment.kt

...src/main/kotlin/theodolite/execution/BenchmarkExecutor.kt

...main/kotlin/theodolite/execution/BenchmarkExecutorImpl.kt

...-quarkus/src/main/kotlin/theodolite/execution/Shutdown.kt

...rc/main/kotlin/theodolite/execution/TheodoliteExecutor.kt

...arkus/src/test/kotlin/theodolite/CompositeStrategyTest.kt

...olite-quarkus/src/test/kotlin/theodolite/TestBenchmark.kt