Use Tracker to track number of tasks in LocalSimulator

[mbeach-aws]

Describe the feature you'd like
Currently, the Tracker counts the number of on-demand tasks, but not LocalSimulator tasks. For example

from braket.aws import AwsDevice
from braket.circuits import Circuit
from braket.tracking import Tracker

circ = Circuit().h(0).cnot(0,1)
device = AwsDevice("arn:aws:braket:::device/quantum-simulator/amazon/sv1")
with Tracker() as tracker:
    task = device.run(circ, shots=1000).result()


print(tracker.quantum_tasks_statistics())
>> {'arn:aws:braket:::device/quantum-simulator/amazon/sv1':
 {'shots': 1000,
  'tasks': {'COMPLETED': 1},
  'execution_duration': datetime.timedelta(microseconds=4000),
  'billed_execution_duration': datetime.timedelta(seconds=3)}}
  
print(tracker.simulator_tasks_cost())
>> $0.00375

The proposal is to add this functionality to track task counts on local simulator like this:

from braket.aws import AwsDevice
from braket.circuits import Circuit
from braket.tracking import Tracker
from braket.devices import LocalSimulator

circ = Circuit().h(0).cnot(0,1)
device = LocalSimulator()
with Tracker() as tracker:
    task = device.run(circ, shots=1000).result()


print(tracker.quantum_tasks_statistics())
>> {'braket:local/simulator':
 {'shots': 1000,
  'tasks': {'COMPLETED': 1},
  'execution_duration': datetime.timedelta(microseconds=4000),
  'billed_execution_duration': None}}
  
print(tracker.simulator_tasks_cost())
>> $0

[njones93531]

Hi! I would like to work on this task as part of unitaryhack.

[rmshaffer]

Hi! I would like to work on this task as part of unitaryhack.

Hi @njones93531, thanks for your interest! Feel free to create a PR with your changes and we will be happy to review it and provide feedback.