Which frame are the injection parameters supposed to be in?

We should add documentation on which frame the parameters should be either https://lscsoft.docs.ligo.org/bilby/transient-gw-data.html#injecting-a-signal or https://lscsoft.docs.ligo.org/bilby/api/bilby.gw.detector.interferometer.Interferometer.html?highlight=bilby%20gw%20detector%20interferometer%20inject_signal#bilby.gw.detector.interferometer.Interferometer.inject_signal

We could also add a log stating the frame the injection is being placed in here: https://git.ligo.org/lscsoft/bilby/-/blob/master/bilby/gw/detector/interferometer.py#L422

From

logger.info("Injected signal in {}:".format(self.name))

to

logger.info("Injected source-frame signal in {}:".format(self.name))