input-field: new color features

[bvr-yr]

• new swap_font option (see on videos)
• now when outline_thickness = 0 (aka borderless) inner box color will be changed instead

this is how it looks

borderless with swap_font:
will change dots color to inner, that's for cases bright font looks ugly on colored box

borderless.mp4

normal with swap_font:
will swap inner and font on check and failure

normal.mp4

now i think we should deprecate fail_transition in favour of color_transition
how it is handled correctly?

[bvr-yr]

for some reason failasset stopped showing after certain commit when hitting enter on empty input, i added workaround for now

[vaxerski]

why is this called swap_font?

[bvr-yr]

i'm bad at namings. dunno, swap_font_color?

[vaxerski]

more like that, yea, it deals with colors after all

[vaxerski]

lgtm

[bvr-yr]

check please if everything is alright in last commit

[vaxerski]

idk looks reasonable