refactor: define struct WrappedLine instead of anonymous tuple

[progval]

It makes the type easier to document, and more obvious for users, given that #607 makes this part of the public API

[joshka]

Although we probably just want to get rid of reflow, this makes the code incrementally easier to understand, so approving this for now regardless.

[joshka]

This needs a small update to rebase on the conflicts.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (dd22e72) 90.9% compared to head (d5db9da) 90.9%.

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #608   +/-   ##
=====================================
  Coverage   90.9%   90.9%           
=====================================
  Files         42      42           
  Lines      12533   12542    +9     
=====================================
+ Hits       11394   11403    +9     
  Misses      1139    1139           

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[joshka]

Hey would you mind signing your commit with gpg and force pushing a change with this (and the updates for the conflicts)

See
https://github.com/ratatui-org/ratatui/blob/main/CONTRIBUTING.md#sign-your-commits for more info.

[Valentin271]

Hi, could you run cargo +nightly fmt and force push so we can merge this PR

[progval]

I rebased instead

[Valentin271]

Works for me, thanks!