Channel Converters

[DJGosnell]

• Adds converter method to be executed on each return of a value from the channel reader.
• Added ListPool<T> to pool list creations re-usages.

New Methods

public static async ValueTask<List<T>> ReadUntilComplete<T, TTo>(
  this INexusDuplexChannel<T> channel,
  Converter<T, TTo> converter,
  int estimatedSize = 0,
  CancellationToken cancellationToken = default)

public static async ValueTask<List<TTo>> ReadUntilComplete<T, TTo>(
  this INexusChannelReader<T> reader,
  Converter<T, TTo> converter,
  int estimatedSize = 0,
  CancellationToken cancellationToken = default)

public override async ValueTask<IReadOnlyList<TTo>> ReadAsync<TTo>(
  Converter<T, TTo> converter, 
  CancellationToken cancellationToken = default)