Warning when analysis/transport is not enabled

[jwindgassen]

For clearer Feedback to the user, they should be informed when an analysis/transport in the XML is not enabled. As currently, it will be silently dropped and ignored.

I decided to use SENSEI_WARNING, but using SENSEI_STATUS would also be possible here if that is too verbose.

I would also argue, that it would be more intuitive, if the default value of the enabled attribute is true, but decided to leave it be for now.

[jwindgassen]

I think the best way would be either:

• Issue a warning when assuming analyses are disabled by default, or
• Issue an info when analyses are assumed to be enabled by default (because a user has to explicitly disable it)

[burlen]

we took the opposite approach to report when an analysis was enabled. meaning if you don't see a report that you expected you know it was skipped. However, I'll merge this if you change warning to a status report.

[burlen]

also, having things default to enabled makes sense to me.

[burlen]

@jwindgassen thank you!