Subscriptions: Remove complexity and log more status codes
Subscriptions: Remove complexity and log more status codes

StalderT/open62541,JGrothoff/open62541,JGrothoff/open62541,StalderT/open62541,StalderT/open62541,open62541/open62541,open62541/open62541,jpfr/open62541,open62541/open62541,open62541/open62541,JGrothoff/open62541,jpfr/open62541,jpfr/open62541,jpfr/open62541,StalderT/open62541,JGrothoff/open62541