Rename project catalog commands

- Order to make commands using same format remove
  dash from commands essentially making `project-catalog`
  to `project catalog`
- Same with sub command `list-available` to available`
- Fixes #198

Author: jvalkeal

src/main/java/org/springframework/cli/command/ProjectCatalogCommands.java

@@ -51,7 +51,7 @@
 import org.springframework.util.ObjectUtils;
 import org.springframework.util.StringUtils;
 
-@Command(command = "project-catalog", group = "Project Catalog")
+@Command(command = "project catalog", group = "Project Catalog")
 public class ProjectCatalogCommands extends AbstractSpringCliCommands {
 
 	private static final Logger logger = LoggerFactory.getLogger(ProjectCatalogCommands.class);
@@ -76,7 +76,7 @@ public ProjectCatalogCommands(SpringCliUserConfig springCliUserConfig,
 		this.objectMapper = objectMapper;
 	}
 
-	@Command(command = "list-available", description = "List available catalogs")
+	@Command(command = "available", description = "List available catalogs")
 	public Object catalogListAvailable(
 			@Option(description = "JSON format output", required = false, defaultValue = "false") boolean json)
 			throws JsonProcessingException {