fixed -Wformat string formatting issues

[nscooling]

Fixed general formatting issues in strings across examples generated by -Wformat All based on using "%d" for all integers replaced with

• "%lu" for uint32_t types
• "%ld" for int32_t types

[embeddedt]

Unfortunately, I don't think it fixes the problem everywhere. Some platforms define uint32_t as unsigned int instead of long unsigned int, and then you will still get a warning if "%lu" is used.

[nscooling]

Sorry yes, I just realised they should be the macro PRIu32 from I'll update it to the correct macro definitions

[embeddedt]

FYI, LVGL has an LV_PRId32 macro that tries to gracefully handle platforms without inttypes.h, however there is no LV_PRIu32 macro at the moment.