chore: provide api version override in app metadata (#183)

* chore: provide api version override in app metadata

* fix code styling

Author: elefantel

Sources/metamask-ios-sdk/Classes/CommunicationLayer/CommClient.swift

@@ -31,8 +31,7 @@ public extension CommClient {
             icon: appMetadata?.iconUrl ?? appMetadata?.base64Icon,
             dappId: SDKInfo.bundleIdentifier,
             platform: SDKInfo.platform,
-            apiVersion: SDKInfo.version
-        )
+            apiVersion: appMetadata?.apiVersion ?? SDKInfo.version)
 
         return RequestInfo(
             type: "originator_info",

Sources/metamask-ios-sdk/Classes/Ethereum/AppMetadata.swift

@@ -9,16 +9,20 @@ public struct AppMetadata {
     public let url: String
     public let iconUrl: String?
     public let base64Icon: String?
+    public let apiVersion: String?
 
     var platform: String = "ios"
 
     public init(name: String,
                 url: String,
                 iconUrl: String? = nil,
-                base64Icon: String? = nil) {
+                base64Icon: String? = nil,
+                apiVersion: String? = nil
+    ) {
         self.name = name
         self.url = url
         self.iconUrl = iconUrl
+        self.apiVersion = apiVersion
         self.base64Icon = base64Icon
     }
 }