…lock (#303)

* Fix potential deadlocks in zip

* Fix debounce

* Fix combineLatest

* Fix Channel

* Fix buffer

Missing Version Number

* Only depend on OrderedCollections from swift-collections

Before this change, once consumers update to SwiftCollections 1.1.0 they'll pull in all of the new collection dependencies (HashTree, BitCollections, etc.). In our case, this increased our binary size by ~1MB. To fix this, we switch to only depending on what we need.

* Add DequeModule dependency

# Motivation

There were a few new strict concurrency warnings that this PR fixes.

To use this package in utils/build-script pipeline

* Add Musl import, error if unrecognised platform

* Add #else #error for all platform checks

The new module and overlay were merged into Swift 6 in swiftlang/swift#74758.

* [DOCS] fix typo: precicely → precisely

* [DOCS] fix typo: ever → every

* [DOCS] fix typo: AsyncBufferSequence, relative

* Move platform requirements to availability annotations

Adding or raising the deployment platforms in the package manifest is a
SemVer major breaking change as consumers must also add or raise their
deployment platforms. This is a known limitation of SwiftPM.

Unforunately this means that it's very difficult for non-leaf packages
to adopt packages which declare their platforms in the manifest. Doing
so puts the brakes on adoption and ecosystem growth. For 'core' packages
like this one availability constraints should be expressed on
declarations rather than in the manifest.

This patch adds equivalent availability annotations to declarations
across the package and removes platforms from the package manifest.

* Address naming feedback

When DocC was introduced the DocC plugin was useful for building documentation locally. Nowadays both Xcode and VSCode have built-in support to generate this without the need for the plugin.

This PR removes the direct dependency on the plugin.