refactor: ♻️ new self setup for Godot 4 (#507)

* refactor: ♻️ new self setup for Godot 4

Switched from PckTool to PckExplorer. This allows us to extract embedded .pck files from the game .exe and inject the modified project.binary and global_script_class_cache.cfg. This ensures that the mod loader autoloads are at the top of the load order, which is crucial for hooking into or extending game autoloads.

* refactor: 🔥 removed output print in split_pck()

* refactor: ♻️ set GodotPCKExplorer path based on OS

* refactor: 🚚 move pckexporer outside of win dir

* refactor: 🔥 remove GodotPCKExplorer

Include only the correct OS version of GodotPCKExplorer in the zip file provided on the release page.

* Update addons/mod_loader/mod_loader_setup.gd

Co-authored-by: steen <[email protected]>

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Co-authored-by: steen <[email protected]>

Author: KANAjetzt