refactor: split hooks types and utils by domain

src/types/handTracking/handTracking.ts

@@ -0,0 +1,67 @@
+export interface HandTrackingLandmark {
+  x: number;
+  y: number;
+  z: number;
+}
+
+export interface HandTrackingHand {
+  x: number;
+  y: number;
+  z: number;
+  landmarks: HandTrackingLandmark[];
+  handedness: string;
+  isFist: boolean;
+  score: number;
+}
+
+export type HandTrackingUsageStatus = "inactive" | "available" | "active";
+
+export type HandTrackingStatus =
+  | "idle"
+  | "requesting_camera"
+  | "starting_camera"
+  | "connecting_server"
+  | "connecting"
+  | "connected"
+  | "disconnected"
+  | "error";
+
+export interface HandTrackingSnapshot {
+  hands: HandTrackingHand[];
+  status: HandTrackingStatus;
+  usageStatus: HandTrackingUsageStatus;
+  serverStatus: string | null;
+  error: string | null;
+}
+
+export interface HandTrackingFrameMessage {
+  type: "frame";
+  timestamp: number;
+  width: number;
+  height: number;
+  image: string;
+}
+
+export interface HandTrackingHandsMessage {
+  type: "hands";
+  timestamp: number;
+  hands: HandTrackingHand[];
+}
+
+export interface HandTrackingStatusMessage {
+  type: "status";
+  timestamp: number;
+  status: string;
+}
+
+export interface HandTrackingErrorMessage {
+  type: "error";
+  timestamp: number;
+  hands: HandTrackingHand[];
+  message: string;
+}
+
+export type HandTrackingServerMessage =
+  | HandTrackingHandsMessage
+  | HandTrackingStatusMessage
+  | HandTrackingErrorMessage;