* feat(label): added animation style property to apply it to circular scrolling animation of label widget
Added an animation style property to be used as animation template for different use cases in different widgets.
This commit implements using this property to set the start and repeat delay of the circular scrolling animation of the label widget.
Closes#3097
* fix(label): changed animation style property's var_type to `const lv_anim_t *`
* example(label): added example showing how to customize circular scrolling animation
* chore(label): ran code-format.py and added missing function prototype to lv_example_widgets.h
* test(bar) Add test for docummented default attributes
* test(bar) Update test for docummented default attributes
* test(bar): Indicator width tracks value
* test(bar) Calculate bar indicator width based on its style
Take padding, max value and bar value into consideraion
* test(bar) Indicator area gets smaller when increasing padding in LV_PART_MAIN style
* test(bar) Start value changes only when in range mode
* docs(bar): Add missing MODE to symbols
* test(bar) Start value should be smaller than current value
* test(bar): Test current value truncation to max and min value
* bar: Check bar mode in lv_bar_set_start_value
bar start_value can be changed only when bar is in LV_BAR_MODE_RANGE mode.
Return early when it's not.
* test(bar): Fix width calculation test
* bar: Initialize indic_area in constructor
* test(bar): Refactor indicator coordinate update test
* test(bar): Indicator negative value in symmetrical mode
* test(bar): Fix base direction
* test(bar): Indicator coord test for RTL base dir
It was used to position the text in one line text areas where the label is shorter then the text area itself.
However, setting min_width=100% in case of one line text area ensures that the label is at least as wide as
the text area. This way the normal text_align style property can be used too.
Fixes https://forum.lvgl.io/t/spinbox-text-centering-not-working-as-intended-expected/6762/4
Add lv_<widget>_draw_part_type_t to widgets to precisly describe the hooked drawings.
Also add class_p element to lv_obj_draw_part_dsc_t to show what widgets lv_<widget>_draw_part_type_t needs to be used.
Related to: https://forum.lvgl.io/t/how-to-add-minor-division-lines-to-a-chart/5366/
