[Proposal] Progress Reporting in Swift Concurrency (#1332)

* ProgressReporter proposal

* reword future directions section + fix typo

* fix spacing

* refactor LocalizedDescriptionOptions

* edit future directions

* update ProgressReporter Pitch to V2

* update proposal to latest version

* fix spacing

* v3 updates

* Update review status for SF-0023 to active review

* Round 2 Pitch

* fix typo

* update proposal to v5

* add code documentation

* Update status for SF-0023 to 2nd Review

* Update 0023-progress-reporter.md

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Co-authored-by: Charles Hu <[email protected]>
Co-authored-by: Charles Hu <[email protected]>

Author: 3 people

Proposals/0023-progress-reporter.md

@@ -916,7 +916,7 @@ Thanks to
 - [Cassie Jones](https://github.com/porglezomp), 
 - [Konrad Malawski](https://github.com/ktoso), 
 - [Philippe Hausler](https://github.com/phausler), 
-- Julia Vashchenko(https://github.pie.apple.com/julia)
+- Julia Vashchenko
 for valuable feedback on this proposal and its previous versions.
 
 Thanks to