Beta ETK800 Hybrid 8.1.0

• Updated to Arcanox Core 5.0 (see the changelog for Arcanox Core for more details on everything this includes).
• Car now spawns powered off; press V to turn it on (there is a slider on the "Tuning" window to change this so the car starts powered on; you can save over the default configurations if you don't like this change).
• Jazzed up the car's dashboard; now it's even fancier than before. All the gauges now participate in the fancy "sweep" animation, and the text/indicator layout on the "screen" was greatly improved, in addition to the "eco bar" under the tach.
• Added a fun little sound effect when turning the car on (when inside the vehicle) inspired by a certain real-life auto manufacturer known for their popular hybrid vehicles.
• Re-tuned hybrid system parameters for all ETK800 hybrid configurations to balance the power and improve drive quality.
• Fixed a visual bug caused by a recent game update that caused the custom Hybrid-related badges on the tailgate to be hidden inside the tailgate mesh.