Rework help command

- Change help command output to get templated using
  model classes.
- Remove things around ParameterDescription as those are
  replaced with template classes.
- Fixes for native configs.
- For now availability and aliases are removed from
  help to get back in better form.
- Aliases has been partly introduced to structure.
- Fixes #422

spring-shell-samples/src/main/java/org/springframework/shell/samples/config/SpringShellNativeConfiguration.java

@@ -36,9 +36,6 @@ import org.springframework.nativex.type.NativeConfiguration;
 	resources = {
 		@ResourceHint(
 			patterns = {
-				"completion/.*",
-				"template/.*.st",
-				"org/springframework/shell/component/.*.stg",
 				"com/sun/jna/win32-x86-64/jnidispatch.dll"
 			}
 		),

spring-shell-samples/src/main/java/org/springframework/shell/samples/standard/AliasCommands.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2022 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.standard;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.standard.ShellComponent;
+import org.springframework.shell.standard.ShellMethod;
+
+@ShellComponent
+public class AliasCommands {
+
+	@ShellMethod(key = { "alias anno main1", "alias anno main2" }, group = "Alias Commands")
+	public String annoMain1() {
+		return "Hello annoMain1";
+	}
+
+	@Bean
+	public CommandRegistration regMain1() {
+		return CommandRegistration.builder()
+			.command("alias", "reg", "main1")
+			.group("Alias Commands")
+			.withAlias()
+				.command("alias", "reg", "main2")
+				.group("Alias Commands")
+				.and()
+			.withTarget()
+				.function(ctx -> {
+					return "Hello regMain1";
+				})
+				.and()
+			.build();
+	}
+
+}

spring-shell-samples/src/main/resources/application.yml

@@ -8,6 +8,8 @@ spring:
     history:
       name: spring-shell-samples-history.log
     command:
+      help:
+        grouping-mode: group
       completion:
         root-command: spring-shell-samples
 ## disable console logging