Refactor EditorManager to use Tools type and remove unnecessary whitespace in Hammer class; add Tools type definition.

src/classes/EditorManager.ts

@@ -1,5 +1,7 @@
+import type { Tools } from "../type";
+
 export class EditorManager {
-    tool : "draw" | "eraser" = "draw";
+    tool : Tools = "draw";
     selected_tile: number = 0;
     displayImageEaster: boolean = false;
     tileMap: { x: number, y: number, tile: number }[] = [];