i15-1: Create system tests

[DominicOram]

We should be able to create a set of system tests that:

• Start up all the services we need (see https://github.com/DiamondLightSource/blueapi/blob/ab2ebc635684fc107bf2992339015ed1f18d1bb1/tests/system_tests/test_blueapi_system.py#L61)
• Run BlueAPI pointing at i15-1 with mock = True (https://github.com/DiamondLightSource/blueapi/blob/ab2ebc635684fc107bf2992339015ed1f18d1bb1/helm/blueapi/values.schema.json#L516)
• Run the plan
• Confirm data is written? Confirm analysis is triggered?

Acceptance Criteria

• We can run our static collection plan is in a system test and confirm it does some useful things
• We add a doc in the BlueAPI repo aimed at other villages to explain how to do this with their plans