For consistency with other pins, allowing use of `PIN_EXISTS` macro.
- `SD_DETECT_PIN` replaces `SDCARDDETECT` - `SD_DETECT_INVERTED` replaces `SDCARDDETECTINVERTED` - Revise the description of `SD_DETECT_INVERTED` - Add a note about the override of `SD_DETECT_INVERTED` in `Conditionals.h`
- Rename the pin so it can be tested with `PIN_EXISTS` - Fix some incorrect tests for `SDCARDDETECT`
Hopefully this is helpful to organization and future expansion….
jbrazio