Cortex: Add regional endpoint support

Use a REGION placeholder in the endpoint URL so operators can deploy the
config in each datacenter with the appropriate regional subdomain
(eu, us-east, apac), matching the screencore/appStockSSP pattern.

Author: Cortex Dev

static/bidder-info/cortex.yaml

@@ -1,5 +1,7 @@
 aliasOf: "teqblaze"
-endpoint: "https://eu.targetadserver.com/pserver"
+# We have the following regional endpoint domains:  'eu' - for EU, 'us-east' - for US_EAST, 'apac' - for APAC
+# Please deploy this config in each of your datacenters with the appropriate regional subdomain
+endpoint: "https://REGION.targetadserver.com/pserver"
 maintainer:
   email: "dev@cortextech.it"
 capabilities:
@@ -11,7 +13,7 @@ capabilities:
   app:
     mediaTypes:
     - banner
-    - video 
+    - video
     - native
 userSync:
   redirect: