began new infrastructure

Yep, this is another one of my "famous" sweeping rewrites. Expect things to break.

Goals for this are:
- Greatly simplify node connections (particularly with arrays) so the code requires less maintenance/is more stable
- Redesign node structure to address issues where UI would stall for lengthy periods of time
- Less reliance on shared ptrs/greater reliance on QObject system for inheritance/memory management
- General code cleanup and improvements

app/widget/scope/waveform/waveform.cpp

@@ -58,22 +58,22 @@ void WaveformScope::DrawScope(TexturePtr managed_tex, QVariant pipeline)
 
   // Set viewport size
   job.InsertValue(QStringLiteral("viewport"),
-                  ShaderValue(QVector2D(width(), height()), NodeParam::kVec2));
+                  NodeValue(NodeValue::kVec2, QVector2D(width(), height())));
 
   // Set luma coefficients
   double luma_coeffs[3] = {0.0f, 0.0f, 0.0f};
   color_manager()->GetDefaultLumaCoefs(luma_coeffs);
   job.InsertValue(QStringLiteral("luma_coeffs"),
-                  ShaderValue(QVector3D(luma_coeffs[0], luma_coeffs[1], luma_coeffs[2]), NodeParam::kVec3));
+                  NodeValue(NodeValue::kVec3, QVector3D(luma_coeffs[0], luma_coeffs[1], luma_coeffs[2])));
 
 
   // Scale of the waveform relative to the viewport surface.
   job.InsertValue(QStringLiteral("waveform_scale"),
-                  ShaderValue(waveform_scale, NodeParam::kFloat));
+                  NodeValue(NodeValue::kFloat, waveform_scale));
 
   // Insert source texture
   job.InsertValue(QStringLiteral("ove_maintex"),
-                  ShaderValue(QVariant::fromValue(managed_tex), NodeParam::kTexture));
+                  NodeValue(NodeValue::kTexture, QVariant::fromValue(managed_tex)));
 
   renderer()->Blit(pipeline, job, VideoParams(width(), height(),
                                               static_cast<VideoParams::Format>(Config::Current()["OfflinePixelFormat"].toInt()),