Add custom banner + bump version to '0.1-staging-3'

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Welcome to autograde version 0.1-staging-3
Powered by Spring Boot 3.1.1 and Java 17.0.8
To access the service, use the following URL "http://grading-service-tcp:8082"
autograde is configured to communicate with the following moodle instance "http://moodle-tcp:80"
===================================================== LOGS ====================================================
2023-08-10 10:54:17,407  [main] INFO  c.e.c.g.m.MoodleGradingServiceApplication - Starting MoodleGradingServiceApplication v0.1-staging-3 using Java 17.0.8 with PID 1 (/app/app.jar started by root in /app)
2023-08-10 10:54:17,408  [main] DEBUG c.e.c.g.m.MoodleGradingServiceApplication - Running with Spring Boot v3.1.1, Spring v6.0.10
2023-08-10 10:54:17,408  [main] INFO  c.e.c.g.m.MoodleGradingServiceApplication - No active profile set, falling back to 1 default profile: "default"
2023-08-10 10:54:24,203  [main] INFO  o.s.b.w.e.tomcat.TomcatWebServer - Tomcat initialized with port(s): 8082 (http)
2023-08-10 10:54:24,210  [main] INFO  o.a.coyote.http11.Http11NioProtocol - Initializing ProtocolHandler ["http-nio-8082"]
2023-08-10 10:54:24,212  [main] INFO  o.a.catalina.core.StandardService - Starting service [Tomcat]
2023-08-10 10:54:24,212  [main] INFO  o.a.catalina.core.StandardEngine - Starting Servlet engine: [Apache Tomcat/10.1.10]
2023-08-10 10:54:24,617  [main] INFO  o.a.c.c.C.[Tomcat].[localhost].[/] - Initializing Spring embedded WebApplicationContext
2023-08-10 10:54:24,619  [main] INFO  o.s.b.w.s.c.ServletWebServerApplicationContext - Root WebApplicationContext: initialization completed in 7018 ms
2023-08-10 10:54:27,414  [main] DEBUG c.e.c.g.m.a.v.a.f.ApiKeyAuthenticationFilter - Filter 'apiKeyAuthenticationFilter' configured for use
2023-08-10 10:54:30,399  [main] INFO  o.s.b.a.e.web.EndpointLinksResolver - Exposing 1 endpoint(s) beneath base path '/actuator'
2023-08-10 10:54:30,707  [main] INFO  o.s.s.web.DefaultSecurityFilterChain - Will secure any request with [org.springframework.security.web.session.DisableEncodeUrlFilter@6c37bd27, org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter@25d3cfc8, org.springframework.security.web.context.SecurityContextHolderFilter@3a91d146, org.springframework.security.web.header.HeaderWriterFilter@7dd00705, org.springframework.security.web.authentication.logout.LogoutFilter@76075d65, ch.epfl.cs107.grading.moodle.api.v1.auth.filter.ApiKeyAuthenticationFilter@71e5f61d, org.springframework.security.web.savedrequest.RequestCacheAwareFilter@6f952d6c, org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter@6d4a65c6, org.springframework.security.web.authentication.AnonymousAuthenticationFilter@30331109, org.springframework.security.web.access.ExceptionTranslationFilter@56ba8773, org.springframework.security.web.access.intercept.AuthorizationFilter@29fc1a2b]
2023-08-10 10:54:32,304  [main] INFO  o.a.coyote.http11.Http11NioProtocol - Starting ProtocolHandler ["http-nio-8082"]
2023-08-10 10:54:32,411  [main] INFO  o.s.b.w.e.tomcat.TomcatWebServer - Tomcat started on port(s): 8082 (http) with context path ''
2023-08-10 10:54:32,596  [main] INFO  c.e.c.g.m.MoodleGradingServiceApplication - Started MoodleGradingServiceApplication in 18.217 seconds (process running for 19.974)
2023-08-10 10:54:32,710  [http-nio-8082-exec-2] INFO  o.a.c.c.C.[Tomcat].[localhost].[/] - Initializing Spring DispatcherServlet 'dispatcherServlet'
2023-08-10 10:54:32,710  [http-nio-8082-exec-2] INFO  o.s.web.servlet.DispatcherServlet - Initializing Servlet 'dispatcherServlet'
2023-08-10 10:54:32,711  [http-nio-8082-exec-2] INFO  o.s.web.servlet.DispatcherServlet - Completed initialization in 1 ms