[Accelerate] [Quadrature] New Quadrature Overlay (#23127)
* [Accelerate] [Quadrature] New Quadrature Overlay
A class that simplifies approximating the definite integral of a function.
* Fixes in response to PR Review.
Change `@_exported import Accelerate` to `import Accelerate`.
Correct date in copyright comment.
* Code Review Fixes.
* Remove mutable integrator, simply set options in init().
* Remove mutable `maxIntervals` and `qagPointsPerInterval`.
* Update tests.
* Code Review Fixes.
* Use standard library `Result`.
* Implement `QAGPointsPerInterval` as a struct.
* Tidy up Passing Integrand to `quadrature_integrate_function`.
Pass the integrand closure directly to the `quadrature_integrate_function` initialiser rather than attaching as a property of the `Quadrature` class.
* Make `Quadrature` a struct, and remove requirement for `integrand` to be escaping.
* Code Review Changes
* Add long-form integrator algorithm aliases (update tests to use these aliases).
* Make quadrature error description public.
* New tests for error description and `QAGPointsPerInterval`.
* Vectorized Integrand for Quadrature
Create an alternative implementation of `integrate` that accepts an integrand of type `(_ input: UnsafeBufferPointer<Double>, _ result: UnsafeMutableBufferPointer<Double>)`.
* Vectorized Integrand for Quadrature
Create an alternative implementation of `integrate` that accepts an integrand of type `(_ input: UnsafeBufferPointer<Double>, _ result: UnsafeMutableBufferPointer<Double>)`.
* Vectorized Integrand for Quadrature
Remove _ContiguousCollection - it's no longer used.
* Delete ContiguousCollection.swift
Not required.
* Refactor tests.
