Interleave: ICollection<> implementation

[viceroypenguin]

This PR adds an ICollection<> implementation of the Interleave operator.

Fixes #375

// * Summary *

BenchmarkDotNet=v0.13.5, OS=Windows 11 (10.0.22621.1555/22H2/2022Update/SunValley2)
12th Gen Intel Core i7-12700H, 1 CPU, 20 logical and 14 physical cores
.NET SDK=8.0.100-preview.3.23178.7
  [Host] : .NET 7.0.5 (7.0.523.17405), X64 RyuJIT AVX2

Method	source	N	Mean	Error	StdDev	Gen0	Gen1	Allocated
InterleaveCount	Syste(...)t32]] [82]	4096	1.584 μs	0.0069 μs	0.0061 μs	0.0992	0.0019	1.22 KB
InterleaveCount	Syst(...)32]] [154]	4096	43.721 μs	0.2876 μs	0.2691 μs	0.4272	0.0610	5.77 KB
InterleaveCopyTo	Syste(...)t32]] [82]	4096	47.959 μs	0.3584 μs	0.3177 μs	1.7090	0.1221	20.98 KB
InterleaveCopyTo	Syst(...)32]] [154]	4096	50.174 μs	0.2550 μs	0.2130 μs	3.1128	0.0610	38.20 KB

Code

#load "BenchmarkDotNet"

void Main()
{
	RunBenchmark();
}

public IEnumerable<object[]> EnumerableArguments()
{
	foreach (var i in new[] { 64, })
	{
		yield return new object[]
		{
			Enumerable.Range(1, i).Select(_ => Enumerable.Range(1, i).ToList().Select(SuperEnumerable.Identity)).ToList().Select(SuperEnumerable.Identity),
			i * i,
		};
		yield return new object[]
		{
			Enumerable.Range(1, i).Select(_ => Enumerable.Range(1, i).ToList()).ToList(),
			i * i,
		};
	}
}

[Benchmark]
[ArgumentsSource(nameof(EnumerableArguments))]
public void InterleaveCount(IEnumerable<IEnumerable<int>> source, int N)
{
	_ = source.Interleave<int>().Count();
}

[Benchmark]
[ArgumentsSource(nameof(EnumerableArguments))]
public void InterleaveCopyTo(IEnumerable<IEnumerable<int>> source, int N)
{
	_ = source.Interleave<int>().ToArray();
}

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.03 🎉

Comparison is base (e762da8) 87.35% compared to head (543b5dc) 87.38%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #376      +/-   ##
==========================================
+ Coverage   87.35%   87.38%   +0.03%     
==========================================
  Files         239      239              
  Lines        7150     7160      +10     
  Branches     1664     1668       +4     
==========================================
+ Hits         6246     6257      +11     
+ Misses        464      463       -1     
  Partials      440      440              

Impacted Files	Coverage Δ
Source/SuperLinq/FillBackward.cs	98.00% <ø> (ø)
Source/SuperLinq/FillForward.cs	100.00% <ø> (ø)
Source/SuperLinq/Interleave.cs	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

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