v1.2.0 Update

Added AudioListener support and required an active AudioListener for audio playback; update docs and sample scene to enable skybox/render settings and include an AudioListener entity. 

Introduced editor UI for scene render settings (skybox colors, clouds), texture picker/previews in material editors and asset browser, and asset image thumbnail rendering. 

Added gizmos module and transform tool UI (move/rotate/scale) with hit-testing and drag handling. 

Implemented undo/redo (UndoManager/UndoState) and integrate scene edit begin/commit/restore flows, plus shortcuts for undo/redo.

Ensured project runtime env (.venv) is created/used when launching editor/run from CLI and add PyInstaller hidden imports/collections for pygame/numpy in the build helper.