Merge web client improvements (layout/styling, functionality) and train additions (new trains added) and legacy arm binaries

[BLuedtke]

Closes #134 and closes #135

Changes:

• The game client is adjusted to better work on iPads (and similar devices) in landscape mode. This is achieved by splitting the styling based on screen orientation.
• The game client now has speed factors per train, as some trains on the "slow" setting would get stuck on double-slip points.
• One route/destination has been disabled for use with the game client, as there are issues with the point and track connectivity.
• The web clients (client-, controller-, driver.html) have been updated (visually) and enhanced slightly, with the ability to load accessory (points, signals) dropdown options from the server instead of only being able to use the defaults. Also, the verification toggle functionality on client.html was fixed (we forgot to adjust that when changing to the JSON API).
• New train configurations have been added (the parser test has been adjusted accordingly), and new train images have been added.
• Dynamic libraries for use on rPi4 and older were added, though one has to rename the files to use them.

Changes have been tested with all trains and different kinds of devices (phone, ipad, laptop).

[eyip002]

The updated interfaces look much better than before (just by opening the html files directly in Safari) 👍

• Review/update server/src/assets/game/README.md

• Wiki pages should be reviewed/updated:

  • https://github.com/uniba-swt/swtbahn-cli/wiki/Handling-HTTP-Errors
  • https://github.com/uniba-swt/swtbahn-cli/wiki/Possible-Errors
  • https://github.com/uniba-swt/swtbahn-cli/wiki/REST-API-of-the-Web-Server-(Current)
  • https://github.com/uniba-swt/swtbahn-cli/wiki/REST-API-of-the-Web-Server-(WIP)

[BLuedtke]

Reworking the wiki pages, especially the API ones, is necessary, I agree.
However, now that we have the OpenAPI documentation of the API, a wiki page like this one would IMO mostly be duplicate information and additional work to keep it updated. There may be some decent ideas in the current text of that page, so I don't want to just delete it. But at the moment, I don't really have the time to rework it. Don't know yet what to do with it.

[BLuedtke]

I've at least added a note on the two directly API-related wiki pages, stating that they are outdated due to the API overhaul merged this September.

[eyip002]

Ready for you to merge 👍