feat(params): add parameters, macros, RAVE controls and resources

Source/MacroControls.h

@@ -0,0 +1,40 @@
+#pragma once
+
+#include <JuceHeader.h>
+#include "Params.h"
+
+namespace serum
+{
+
+// ===========================================================================
+// One assignable destination for a macro knob.
+// ===========================================================================
+struct MacroAssignment
+{
+    ModTarget target = ModTarget::None;
+    float     depth  = 0.0f;
+};
+
+// ===========================================================================
+// Four macros (Energy, Width, Drive, Atmosphere). Macro *values* are APVTS
+// parameters; this class stores the assignable destinations and serialises
+// them with the preset.
+// ===========================================================================
+class MacroControls
+{
+public:
+    static constexpr int kMaxAssignments = 8;
+
+    std::array<std::vector<MacroAssignment>, kNumMacros> assignments;
+
+    bool addAssignment (int macro, ModTarget target, float depth);
+    void removeAssignment (int macro, int index);
+    void clear();
+
+    juce::ValueTree toValueTree() const;
+    void fromValueTree (const juce::ValueTree& tree);
+
+    static juce::String macroName (int index);
+};
+
+} // namespace serum