SDI 21 boost patch support

The boost control patch in web tools now supports Continental SDI 21. The working mechanism is similar to SIMOS 18.
SDI 21 has values ranging from -1 to 0 from factory, as with S18, the higher the value, the more closed the wastegate (or VTG).

I have also improved the map auto filling – it will give a more intuitive understanding of the maps function, making it easier to see how it works at a glance.