get_steinberg_sdk.py points to invalid URL

[etheory]

http://www.steinberg.net/sdk_downloads/vstsdk366_27_06_2016_build_61.zip is no longer live. The get_steinberg_sdk.py should be updated to reflect this.

The correct URL is now:
https://www.steinberg.net/vst3sdk

[etheory]

Linked to: #50

[bdejong]

All plugins have been rewritten in JUCE with some help from AI:
https://github.com/bdejong/smartelectronix/releases