fix(codegen): replace part argument 0 with LV_PART_MAIN in generated lv_obj_get/set_style_* calls for LVGL 9.40+ #868
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LVGL ≥9.40 changed the second parameter of style get/set helpers from int to lv_part_t. The previous code generator emitted calls like lv_obj_get_style_opa(obj, 0) which now fail with: invalid conversion from 'int' to 'lv_part_t'. Added a post‑processing step in build.ts that rewrites any generated lv_obj_get_style_* and lv_obj_set_style_* calls using part 0 to LV_PART_MAIN. Backwards compatible with LVGL 8 (LV_PART_MAIN == 0).
i tested by building EEZ Studio and installing, Generated c files, and it work with arduino 9.40 out of box :)