Create CI pipelines for offline testing of BlueAPI configuration

As a developer in a support team I would like to be able to test that the following all work together to produce the expected outcome:
* My BlueAPI config
* My dodal devices
* My plans

e.g I have the following:

Inside `values.yaml`:
```python
env:
sources:
- kind: dodal
module: dodal.beamlines.i04
- kind: planFunctions
module: mx_bluesky.beamlines.i04
```

Inside `dodal.beamlines.i04`:

```python
@device_factory()
def device_a():
...

@device_factory()
def device_b():
...
```

Inside `mx_bluesky.beamlines.i04`:

```python
def my_plan(device_a = inject("device_a"), device_b = inject("device_b")) -> MsgGenerator
....

def my_bad_plan(device_a = inject("my_bad_device")) -> MsgGenerator
....

```

I would then like to run the following tests in CI:

```python
def test_blueapi_picks_up_my_plan():
assert "my_plan" in blueapi_context.plans

def test_blueapi_can_inject_all devices_into_all_plans():
# TBD what this looks like exactly but it should iterate through all plans
# known to blueAPI and make sure the devices requested can be found
# in the dodal module. i.e. `my_bad_plan` above will fail this
```

# Notes
* This probably needs to be done in a separate repo to dodal/plan repo/blueAPI but it makes sense to add the issue here as BlueAPI is what ties it all together.

## Acceptance Criteria
- There is a CI job that does this for an example set of repos
- There is some documentation on how to add the same for the support team's repo