lvgl.h: Add lv_version functions (#1973)
lvgl.h: Add lv_version functions (#1973)

These static inline functions return the values of the VERSION macros, making them available for Micropython

See also https://github.com/lvgl/lv_examples/pull/85#issuecomment-749506978
littlevgl/lvgl,littlevgl/lvgl,littlevgl/lvgl,littlevgl/lvgl