Refactor GUI Engine, Clean Code, and Improve Project Configuration

[thepherm]

This pull request encompasses several enhancements aimed at improving the maintainability, configurability, and overall quality of the Game Pencil Engine (GPE) editor. The key changes are as follows:

1. ** GPE Editor Refactoring:**

   • Refactored Hardcoded Paths: Refactored gpe_editor to remove hardcoded file paths, enhancing cross-platform compatibility and flexibility.

2. Project Configuration Enhancements:

   • Added VS Code Configuration Files: Introduced Visual Studio Code configuration files to facilitate a better development environment for contributors using VS Code.
   • Added Build command ( ctrl/command + shift + b )
   • Added Run Command ( F5 ) to start latest build of GPE editor