"Flipping" plot axes is not straight forward

We have implemented two flags for the plot config which flips axes in order to plot certain graphs in a nice way.
https://github.com/equinor/ert/blob/f6840957602dd3a50fcee9fd250e8c3065bb1bd9/src/ert/gui/tools/plot/plottery/plot_config.py#L91-L92

The flip_response_axis is used for RFT plots to plot depth in decreasing value on the Y axis.
The flip_observation_axis is used for Breakthrough plots to flip the observations horizontally.

However, just flipping these flags does not work by itself, there is custom logic in endpoints which are tailored to fit these flags.
It would be nice for maintainability if these flags would work by themselves without depending on any other custom logic elsewhere in the code.
For example for breakthrough observations we need to ensure that the std is converted to time deltas:
https://github.com/equinor/ert/blob/f6840957602dd3a50fcee9fd250e8c3065bb1bd9/src/ert/gui/tools/plot/plottery/plots/observations.py#L62-L71

Start in src/ert/gui/tools/plot/plottery/plot_config.py at the flip_response_axis and flip_observation_axis flags, then read the related logic in src/ert/gui/tools/plot/plottery/plots/observations.py. Trace the RFT and Breakthrough plot endpoints that currently adapt to these flags. Done means the flags work independently while preserving the intended axis orientation and observation behavior.