no_std tracking issue

[orhun]

I gave it a spin on making several widgets no_std and sharing my findings here for proceeding with implementation after Ratatui 0.30 is out.

Workspace dependencies

• ratatui (0.30) -> std feature should be disabled.
• derive_builder -> std feature should be disabled and alloc should be enabled.
• strum -> std feature should be disabled.
• itertools -> use_std feature should be disabled.

tui-big-text

• font8x8 -> std feature should be disabled.

tui-bar-graph

• colorgrad does not support no_std yet.
  • Support no_std environments mazznoer/csscolorparser-rs#31
  • Support no_std environments mazznoer/colorgrad-rs#18

TODO: investigate the other crates

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Additonally, #![no_std] indicator should be added to lib.rs for each crate.

[orhun]

tui-bar-graph is ready to be no_std'fied I think. I'm gonna do that when I'm working on Tuitar again, sometime later.