Added some dartdocs

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

packages/wolf_3d_dart/lib/wolf_3d_entities.dart

@@ -1,6 +1,13 @@
-/// Support for doing something awesome.
+/// Main entry point for all entity-related functionalities in the Wolf3D project.
 ///
-/// More dartdocs go here.
+/// This library exports various entity types, including:
+/// - Enemies (e.g., [Guard], [Mutant], [HansGrosse])
+/// - Weapons (e.g., [Pistol], [MachineGun])
+/// - Collectibles (e.g., [Ammo])
+/// - Doors ([Door])
+/// - Decorative elements ([Decorative], [DeadGuard])
+///
+/// It also provides access to the [EntityRegistry] for managing entities.
 library;
 
 export 'src/entities/entities/collectible.dart';

packages/wolf_3d_dart/lib/wolf_3d_input.dart

@@ -1,3 +1,7 @@
+/// Entry point for the input handling module of Wolf3D.
+///
+/// This library consolidates access to various input methods, exporting
+/// functionalities from sub-modules like CLI input handling.
 library;
 
 export 'src/input/cli_input.dart';

packages/wolf_3d_dart/lib/wolf_3d_synth.dart

@@ -1,6 +1,7 @@
-/// Support for doing something awesome.
+/// Entry point for the sound synthesis module of Wolf3D.
 ///
-/// More dartdocs go here.
+/// This library provides access to audio functionalities, primarily by exporting
+/// the [WolfAudio] class.
 library;
 
 export 'src/synth/wolf_3d_audio.dart' show WolfAudio;