Write v1.0.0 release notes

[rodlie]

Big one 😄

[rodlie]

Merge these into one:

• https://github.com/friction2d/friction2d.github.io/blob/main/_posts/2024-10-16-friction-100-beta1.md
• https://github.com/friction2d/friction2d.github.io/blob/main/_posts/2024-12-02-friction-100-beta2.md
• https://github.com/friction2d/friction2d.github.io/blob/main/_posts/2025-03-10-friction-100-rc1.md

And add whatever was done after RC1.

[rodlie]

Added after RC1:

• Apple Silicon support
• User defaults for new scene
• Support paste SVG from clipboard (shift+ctrl+v)

More pending (will update when merged).

[rodlie]

First draft added: https://github.com/friction2d/friction2d.github.io/blob/main/_drafts/friction-100.md