Feature request: Auto script detection + OCR

[amitdo]

Your Feature Request

Currently, when using PSMs which include OSD (1, 12), the page Orientation is auto Detected but the Script is not detected.

When no model is given with -l lang, instead of using eng as default, the 'with OSD' PSMs should detect the (dominant) script and use a matching script model (from the best/fast repos), if it available in the system, to OCR the image.