[bs-73] Anonymous classes cannot be used in @Bean definitions in .groovy scripts

* Added a test for each of the classes loaded by the SpringApplication
* If it's an anonymous class or looks like a Groovy closure we ignore it
* The CLI sample job.groovy also modified to take advantage

[Fixes #48718891]

spring-bootstrap-cli/samples/job.groovy

@@ -14,7 +14,12 @@ class JobConfig {
 
 	@Bean
 	protected Tasklet tasklet() {
-		return new SampleTasklet()
+		return new Tasklet() { 
+          @Override
+          RepeatStatus execute(StepContribution contribution, ChunkContext context) {
+            return RepeatStatus.FINISHED
+          }
+        }
 	}
 
 	@Bean
@@ -28,13 +33,6 @@ class JobConfig {
 	}
 }
 
-class SampleTasklet implements Tasklet {
-	@Override
-	RepeatStatus execute(StepContribution contribution, ChunkContext context) {
-		return RepeatStatus.FINISHED
-	}
-}
-
 import org.springframework.util.StringUtils
 import groovy.util.logging.Log