feat: Add thumbnail management for albums and people, implement face embedding functionality

libertas_core/src/models.rs

@@ -194,3 +194,11 @@ pub struct PersonShare {
     pub user_id: uuid::Uuid,
     pub permission: PersonPermission,
 }
+
+#[derive(Debug, Clone)]
+pub struct FaceEmbedding {
+    pub id: uuid::Uuid,
+    pub face_region_id: uuid::Uuid,
+    pub model_id: i16,
+    pub embedding: Vec<u8>,
+}