Add Instrudio — 4 free physically modeled instrument plugins (VST3/AU)

[GareBear99]

Instrudio — 4 free open-source VST3/AU synth plugins:

• Studio Violin (Helmholtz synthesis)
• Studio Grand (inharmonic additive)
• Celestial Harp (Karplus-Strong)
• Studio Bongos (Bessel modal)

JUCE 7. CMake. MIT licensed. macOS + Windows (CI).

Repo: https://github.com/GareBear99/Instrudio
Downloads: https://github.com/GareBear99/Instrudio/releases/tag/v2.0.0

Looking for testers — especially Windows DAW compatibility.