Resolve "plugin does not provide info about overlays"

Closes #332 (closed)

src/services/pluginsManager/map/overlays/types/DataOverlay.ts

+import { MapOverlay } from '@/types/models';
+import { DataOverlayEntry } from '@/services/pluginsManager/map/overlays/types/DataOverlayEntry';
+
+export class DataOverlay {
+  id: number;
+
+  idObject: number;
+
+  name: string;
+
+  order: number;
+
+  creator: string;
+
+  description: string;
+
+  genomeType: string | null;
+
+  genomeVersion: string | null;
+
+  publicOverlay: boolean;
+
+  type: string;
+
+  entries: DataOverlayEntry[];
+
+  constructor(mapOverlay: MapOverlay) {
+    this.id = mapOverlay.idObject;
+    this.idObject = mapOverlay.idObject;
+    this.name = mapOverlay.name;
+    this.order = mapOverlay.order;
+    this.creator = mapOverlay.creator;
+    this.description = mapOverlay.description;
+    this.genomeType = mapOverlay.genomeType;
+    this.genomeVersion = mapOverlay.genomeVersion;
+    this.publicOverlay = mapOverlay.publicOverlay;
+    this.type = mapOverlay.type;
+    this.entries = [];
+  }
+
+  public addEntry(entry: DataOverlayEntry): void {
+    this.entries.push(entry);
+  }
+}