Add checks for factories files

META-INF/spring.factories and META-INF/spring/aot.factories in the
main source set are now checked. The checks verify that:

- Each class listed in the values exists in the source set's output
- The classes are listed alphabetically
- Nested classes are identified using their binary name

Closes gh-44676

spring-boot-project/spring-boot-devtools/src/main/resources/META-INF/spring.factories

@@ -4,8 +4,8 @@ org.springframework.boot.devtools.restart.RestartScopeInitializer
 
 # Application Listeners
 org.springframework.context.ApplicationListener=\
-org.springframework.boot.devtools.restart.RestartApplicationListener,\
-org.springframework.boot.devtools.logger.DevToolsLogFactory.Listener
+org.springframework.boot.devtools.logger.DevToolsLogFactory$Listener,\
+org.springframework.boot.devtools.restart.RestartApplicationListener
 
 # Environment Post Processors
 org.springframework.boot.env.EnvironmentPostProcessor=\