add(*): support ignore logs by WithDecider

[linhbkhn95]

Background

I just upgraded from v1 to v2. But I have a problem with the logging package.
Currently, I have not seen an ignore logging feature like v1 at v2.

Changes

• Add WithDecider option into interceptor.
  Example:

const TestPingFullMethodName = "/testing.testpb.v1.TestService/Ping"
fullMethodNamesWithoutLogging := []string{TestPingFullMethodName}

opts := []grpc.ServerOption{
 grpc.UnaryInterceptor(logging.UnaryServerInterceptor(s.logger, logging.WithDecider(ignoreLoggingDecider(fullMethodNamesWithoutLogging)))),
 }

func ignoreLoggingDecider(fullMethodNames []string) logging.Decider {
   return func(fullMethodName string) bool {
   	for _, f := range fullMethodNames {
   		if fullMethodName == f {
   			return false
   		}
   	}
   	return true
   }
}

Verification

• Unitest and integration test
• Integration with my internal services

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