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

libertas_api/src/schema.rs

@@ -279,3 +279,13 @@ pub struct ServeFileQuery {
     #[serde(default)]
     pub strip: bool,
 }
+
+#[derive(Deserialize)]
+pub struct SetThumbnailRequest {
+    pub media_id: Uuid,
+}
+
+#[derive(Deserialize)]
+pub struct SetPersonThumbnailRequest {
+    pub face_region_id: Uuid,
+}