fix(conf) better support bool option from Kconfign (#2555)

* fix(arc) format code

Signed-off-by: FASTSHIFT <vifextech@foxmail.com>

* fix(Kconfig) add missing LV_BUILD_EXAMPLES configuration

Signed-off-by: FASTSHIFT <vifextech@foxmail.com>

* fix(fsdrv): remove the seek call in fs_open (#2736)

since the file should be located at zero after open

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

* docs(os) add example and clarify some poinits

* fix(draw border):border draw error if border width > radius (#2739)

* fix(label) consider base dir lv_label_get_letter_pos in special cases

related to https://github.com/lvgl/lvgl/issues/2712#issuecomment-953463193

* improve lv_conf_internal_gen.py for better Kconfig support

Co-authored-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Co-authored-by: embeddedt <42941056+embeddedt@users.noreply.github.com>
Co-authored-by: guoweilkd <guowei15@xiaomi.com>
Co-authored-by: Gabor Kiss-Vamosi <kisvegabor@gmail.com>

lv_conf_template.h

@@ -407,7 +407,7 @@ e.g. "stm32f769xx.h" or "stm32f429xx.h"*/
 
 #define LV_USE_ARC        1
 
-#define LV_USE_ANIMIMG	  1
+#define LV_USE_ANIMIMG    1
 
 #define LV_USE_BAR        1