input-field: fail display improvments

[bvr-yr]

• pango-parseable fail_text with $FAIL as pam fail-reason
• fail_color to change untagged text color and outer color
• fail_transition to configure transition time between outer and fail
• temporarily resize input-field if fail-message is too long

should fix #97 (#97 (comment))
also accidentally fixed #144, but i'm not sure, maybe it is intended behaviour?
if so, i'll just add check in resize thing to not reshadow if fade_on_empty = true

i definitely focked-up somewhere, so double-check plz ❤️

ufail.mp4

[bvr-yr]

hmm wait.. do actual env vars expand now? i mean not this MR
i believe it was not so some time ago, or was it always like that?

looks odd xD

upd:
yeah v0.1.0 also expands
don't think that's a problem, probably just prefix all hyprlock vars with HL_ but this is breaking
or probably add ability to hyprlang to escape $VAR with $$ to make it literal, i didn't find way to escape it

[vaxerski]

lgtm I guess, wiki mr needed