1.0.0 maintenance

What's Changed

• maintenance - opscripting by @MrLixm in #2

• overall license switched to Apache 2.0 (different license can apply to sub repositories)
• better gitignore
• moved and improved startup script example for Windows
• better and updated README
• added project.toml for better repository tracking and packaging
• renamed src/nodegraph/ to src/python/

Full Changelog: https://github.com/MrLixm/Foundry_Katana/commits/v1.0.0