add `prepare_weo_2023_scenario()`

[cjyetman]

• work towards https://github.com/RMI-PACTA/workflow.scenario.preparation/issues/9
• precedes https://github.com/RMI-PACTA/workflow.scenario.preparation/pull/23

The weo_2023 object prepared here has some differences with the pacta.scenario.preparation::weo_2023 object, but I have confirmed with @Antoine-Lalechere that they are probably desirable:

• all Aviation rows in the old version have NA for the technology, but the new one has Passenger

the following code finds no differences

waldo::compare(
  dplyr::arrange(pacta.scenario.preparation::weo_2023, scenario, scenario_geography, sector, technology),
  dplyr::mutate(
    dplyr::arrange(weo_2023, scenario, scenario_geography, sector, technology),
    technology = dplyr::if_else(sector == "Aviation", NA, technology)
  )
)

[cjyetman]

~I'm going to force merge because the only changes since your reviews was sorting out the merge conflicts with sys data.rda and adding tests for the bridges.~

don't have privileges for that, sorry @jdhoffa and @Antoine-Lalechere, I need to re-request your reviews

[jdhoffa]

Now you can