feat: Set the output path explicitly by default when creating project without build tools (#524)

Co-authored-by: Shi Chen <[email protected]>

Author: jdneo

templates/invisible-project/.vscode/settings.json

@@ -0,0 +1,4 @@
+{
+    "java.project.sourcePaths": ["src"],
+    "java.project.outputPath": "bin"
+}

templates/invisible-project/README.md

@@ -9,6 +9,10 @@ The workspace contains two folders by default, where:
 - `src`: the folder to maintain sources
 - `lib`: the folder to maintain dependencies
 
+Meanwhile, the compiled output files will be generated in the `bin` folder by default.
+
+> If you want to customize the folder structure, open `.vscode/settings.json` and update the related settings there.
+
 ## Dependency Management
 
 The `JAVA PROJECTS` view allows you to manage your dependencies. More details can be found [here](https://github.com/microsoft/vscode-java-dependency#manage-dependencies).