GCPMonitor to use unique name when pushing to GCP

GCPMonitor receives a name parameter when instantiated. This name is now added to the measure that is being sent to GCP.

The measures are:

• mnqueues.{self.name}.number_queue_get
• mnqueues.{self.name}.number_queue_put
• mnqueues.{self.name}.time_in_queue_distribution

extend measures

1. Add support for time-in-queue measure,
2. improve code quality,
3. improve build & release process

initial release

1. MP queues + monitoring,
2. tests,
3. build & project setup.