Added web worker to improve tile analysis performance

src/types/tileTypes.ts

@@ -0,0 +1,20 @@
+export interface TileAnalysisResult {
+  tileId: string
+  color: {
+    r: number
+    g: number
+    b: number
+  }
+  edge: number
+  namePrefix: string
+}
+
+export interface TileWorkerMessage {
+  imageData: ImageData
+  tileId: string
+  tileName: string
+}
+
+export interface TileCache {
+  [key: string]: TileAnalysisResult
+}