Added declarations. These are related to previous commit. It was left.

Author: NidhiDixit09

BranchSDK/BranchPluginSupport.h

@@ -13,6 +13,17 @@ NS_ASSUME_NONNULL_BEGIN
 @interface BranchPluginSupport : NSObject
 
 + (BranchPluginSupport *)instance;
+/**
+Sets a custom base URL for all calls to the Branch API.
+@param url  Base URL that the Branch API will use.
+*/
++ (void)setAPIUrl:(NSString *)url;
+
+/**
+Sets a custom CDN base URL
+@param url Base URL for CDN endpoints.
+*/
++ (void)setCDNBaseUrl:(NSString *)url;
 
 - (NSDictionary<NSString *, NSString *> *)deviceDescription;