feat: Working on documentation

Examples/Sources/CliDoc-Examples/CliDoc_Examples.swift

@@ -9,7 +9,8 @@ struct Application: ParsableCommand {
       subcommands: [
         SectionCommand.self,
         VStackCommand.self,
-        HStackCommand.self
+        HStackCommand.self,
+        GroupCommand.self
       ]
     )
   }

Examples/Sources/CliDoc-Examples/GroupCommand.swift

@@ -0,0 +1,21 @@
+import ArgumentParser
+import CliDocCore
+
+struct GroupCommand: ParsableCommand {
+
+  static let configuration = CommandConfiguration(commandName: "group")
+
+  func run() throws {
+    let group = Group {
+      "My headline."
+      "\n"
+      "Some content".color(.green)
+      "\n"
+      "Foo Bar".italic()
+    }
+    .color(.blue)
+
+    print()
+    print("\(group.render())")
+  }
+}