style: reformat imports

[joshka]

Order imports by std, external, crate and group them by crate

[codecov]

Codecov Report

Merging #219 (485d2ee) into main (492af7a) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #219   +/-   ##
=======================================
  Coverage   81.76%   81.76%           
=======================================
  Files          34       34           
  Lines        6591     6591           
=======================================
  Hits         5389     5389           
  Misses       1202     1202           

Impacted Files	Coverage Δ
src/backend/crossterm.rs	0.00% <ø> (ø)
src/backend/mod.rs	33.33% <ø> (ø)
src/backend/termion.rs	28.04% <ø> (ø)
src/backend/termwiz.rs	0.00% <ø> (ø)
src/backend/test.rs	43.63% <ø> (ø)
src/buffer.rs	93.30% <ø> (ø)
src/layout.rs	85.25% <ø> (ø)
src/style.rs	85.33% <ø> (ø)
src/terminal.rs	56.19% <ø> (ø)
src/text.rs	69.74% <ø> (ø)
... and 14 more

[sayanarijit]

Looks like it will create merge conflict with other PRs. LGTM, otherwise.

[joshka]

Yup. I figured that a rebase would be necessary depending on which PR goes first regardless.

[sayanarijit]

I guess it's easy to force rebase this pr than other prs, so let's wait for a good opportunity.

[joshka]

I'm not sure I'd worry too much about waiting - there's always going to be some amount of outstanding PRs, so there's not really a good or a bad time to merge cross repo type stuff.

This contains a rustfmt.toml change that make all the changes automatic.

There are 2 ways to make the pain of rebasing on top of this pain free (assuming this change gets merged before some other PR):

1. If you're squashing the PR, git checkout main -- rustfmt.toml; cargo fmt; git add src; git commit -m 'style: reformat' then squash and rebase.
2. More difficult: rebase and sort out the conflcts then cargo fmt.

Option 1 would be mostly automatic.

[joshka]

Rebased and fixed conflict in rustfmt.toml