make checkPeerToken a static function

Author: maxxfrazer

MultipeerHelper+Example/MultipeerHelper+Example/RealityViewController.swift

@@ -51,7 +51,7 @@ extension RealityViewController: MultipeerHelperDelegate {
     _ peer: MCPeerID,
     with discoveryInfo: [String: String]?
   ) -> Bool {
-    if self.checkPeerToken(with: discoveryInfo) {
+    if RealityViewController.checkPeerToken(with: discoveryInfo) {
       return true
     }
     print("incompatible peer!")

Sources/MultipeerHelper/MultipeerHelperDelegate.swift

@@ -59,7 +59,7 @@ extension MultipeerHelperDelegate {
   /// picked up by a browser.
   /// - Returns: Boolean representing whether or not the two devices
   /// have compatible versions of RealityKit.
-  public func checkPeerToken(with discoveryInfo: [String: String]?) -> Bool {
+  public static func checkPeerToken(with discoveryInfo: [String: String]?) -> Bool {
     guard let compTokenStr = discoveryInfo?["compatibility_token"]
           else {
       return false