feat: added gcp_na region

Author: abhinav-from-contentstack

Contentstack/ContentstackDefinitions.h

@@ -79,7 +79,8 @@
         US = 0,
         EU,
         AZURE_NA,
-        AZURE_EU
+        AZURE_EU,
+        GCP_NA
     };
 
     typedef NS_ENUM(NSUInteger, Language) {

ContentstackInternal/NSObject+Extensions.m

@@ -43,6 +43,7 @@ -(NSArray*)hostURLS {
     static dispatch_once_t hostURLSOnceToken;
     dispatch_once(&hostURLSOnceToken, ^{
         hostURLS = @[@"cdn.contentstack.io",
+                     @"cdn.contentstack.com",
                      @"cdn.contentstack.com",
                      @"cdn.contentstack.com",
                      @"cdn.contentstack.com"];
@@ -61,7 +62,8 @@ -(NSArray*)regionCodes {
          regionCodes = @[@"us",
                          @"eu",
                          @"azure-na",
-                         @"azure-eu"];
+                         @"azure-eu",
+                         @"gcp-na"];
      });
     return regionCodes;
 }