feat(cli): Add optimize CLI flags for keepNamed and keepMeshes (#1551)

packages/cli/src/cli.ts

@@ -336,6 +336,14 @@ commands or using the scripting API.
 		validator: Validator.BOOLEAN,
 		default: true,
 	})
+	.option('--join-keep-meshes <bool>', 'Prevents joining distinct Meshes and Nodes.', {
+		validator: Validator.BOOLEAN,
+		default: JOIN_DEFAULTS.keepMeshes,
+	})
+	.option('--join-keep-named <bool>', 'Prevents joining named Meshes and Nodes.', {
+		validator: Validator.BOOLEAN,
+		default: JOIN_DEFAULTS.keepNamed,
+	})
 	.option('--weld <bool>', 'Merge equivalent vertices. Required when simplifying geometry.', {
 		validator: Validator.BOOLEAN,
 		default: true,
@@ -360,6 +368,8 @@ commands or using the scripting API.
 			textureSize: number;
 			flatten: boolean;
 			join: boolean;
+			joinKeepNamed: boolean;
+			joinKeepMeshes: boolean;
 			weld: boolean;
 		};
 
@@ -378,7 +388,14 @@ commands or using the scripting API.
 		}
 
 		if (opts.flatten) transforms.push(flatten());
-		if (opts.join) transforms.push(join());
+		if (opts.join) {
+			transforms.push(
+				join({ 
+					keepNamed: opts.joinKeepNamed, 
+					keepMeshes: opts.joinKeepMeshes, 
+				})
+			);
+		}
 		if (opts.weld) transforms.push(weld());
 
 		if (opts.simplify) {