refactor: unify model source and weight lifecycle management (#1956)

src/model_component.h

@@ -0,0 +1,61 @@
+#ifndef __SD_MODEL_COMPONENT_H__
+#define __SD_MODEL_COMPONENT_H__
+
+enum class ModelComponent {
+    Conditioner,
+    Diffusion,
+    HighNoiseDiffusion,
+    CLIPVision,
+    IPAdapter,
+    VAE,
+    PreviewVAE,
+    AudioVAE,
+    ControlNet,
+    PhotoMaker,
+    PuLID,
+    LoRA,
+    Upscaler,
+    Detector,
+    LatentUpsampler,
+    Count,
+};
+
+inline const char* model_component_name(ModelComponent component) {
+    switch (component) {
+        case ModelComponent::Conditioner:
+            return "Conditioner model";
+        case ModelComponent::Diffusion:
+            return "Diffusion model";
+        case ModelComponent::HighNoiseDiffusion:
+            return "High noise diffusion model";
+        case ModelComponent::CLIPVision:
+            return "CLIP vision";
+        case ModelComponent::IPAdapter:
+            return "IP-Adapter";
+        case ModelComponent::VAE:
+            return "VAE";
+        case ModelComponent::PreviewVAE:
+            return "preview VAE";
+        case ModelComponent::AudioVAE:
+            return "audio VAE";
+        case ModelComponent::ControlNet:
+            return "ControlNet";
+        case ModelComponent::PhotoMaker:
+            return "photomaker";
+        case ModelComponent::PuLID:
+            return "pulid";
+        case ModelComponent::LoRA:
+            return "LoRA";
+        case ModelComponent::Upscaler:
+            return "ESRGAN";
+        case ModelComponent::Detector:
+            return "YOLOv8";
+        case ModelComponent::LatentUpsampler:
+            return "LTX latent upsampler";
+        case ModelComponent::Count:
+            break;
+    }
+    return "unknown";
+}
+
+#endif  // __SD_MODEL_COMPONENT_H__