U2025.09.04-1423: Automatic merge of T1.6-rc8-59-g2eb7441b08 and 11 pull requests

- Pull request #1086 at e10390b0bb: Add Settings Exporter tool (copy settings to INI, etc)
- Pull request #1091 at 9b80facce2: Automatic speed control
- Pull request #1104 at 79192435d6: Handle simple adhesion within the axle module
- Pull request #1115 at 270f22fb72: Do not activate ETS switch if no suitable cars are attached
- Pull request #1120 at ba3c47fa79: Automatically Calculate Friction Values if Missing
- Pull request #1121 at 91d2d26d63: Manually Override Articulation
- Pull request #1124 at e241a0d122: Built-in PBL2 brake controller
- Pull request #1130 at 8ae6bb7a4e: Fix F9 points to an incorrect car ID.
- Pull request #1157 at 39cd994e18: Dynamic brake authorization by TCS
- Pull request #1082 at 5845a1af5c: Allow variable water level in glass gauge
- Pull request #1128 at 1d7643dae6: Particle Emitter Overhaul