Keylight C++ SDK v0.1.1

Fixed

• JUCE adapter now compiles. Two errors in integrations/juce/KeylightJuce.h
  prevented it from building in a real JUCE project:
  • It used juce::MessageManager::callAsync but only included
    <juce_core/juce_core.h>; MessageManager lives in juce_events. The
    header now includes <juce_events/juce_events.h> so it is self-contained.
    (If you wire JUCE modules manually, link juce_events as well as juce_core.)
  • JuceUrlTransport built juce::URL::InputStreamOptions by reassignment,
    but that type is not copy-assignable; the options are now built in a single
    chained expression.

Added

• Continuous integration for the JUCE adapter (.github/workflows/juce.yml):
  every push compiles, links, and smoke-tests KeylightJuce.h against real JUCE
  (7.0.12 and 8.0.6) on Linux, macOS, and Windows, so the adapter no longer
  relies on manual verification.