TagFirstLast: IList<> implementation

[viceroypenguin]

This PR adds an IList<> implementation of TagFirstLast, which reduces memory usage and improves performance.

Fixes #407

// * 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
TagFirstLastCount	Syste(...)nt32] [47]	10000	10.04 ns	0.092 ns	0.086 ns	0.0025	0.0000	32 B
TagFirstLastCount	Syste(...)nt32] [62]	10000	107,083.41 ns	252.544 ns	223.874 ns	-	-	168 B
TagFirstLastCopyTo	Syste(...)nt32] [47]	10000	78,637.78 ns	646.245 ns	604.498 ns	6.3477	1.0986	80104 B
TagFirstLastCopyTo	Syste(...)nt32] [62]	10000	132,709.80 ns	836.973 ns	782.906 ns	16.6016	2.1973	211904 B
TagFirstLastElementAt	Syste(...)nt32] [47]	10000	18.74 ns	0.122 ns	0.115 ns	0.0025	0.0000	32 B
TagFirstLastElementAt	Syste(...)nt32] [62]	10000	84,293.48 ns	353.597 ns	330.755 ns	-	-	168 B

Code

#load "BenchmarkDotNet"

void Main()
{
	RunBenchmark();
}

public IEnumerable<object[]> EnumerableArguments()
{
	foreach (var i in new[] { 10_000, })
	{
		yield return new object[]
		{
			Enumerable.Range(1, i).Where(_ => true),
			i,
		};
		yield return new object[]
		{
			Enumerable.Range(1, i).ToList(),
			i,
		};
	}
}

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

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

[Benchmark]
[ArgumentsSource(nameof(EnumerableArguments))]
public void TagFirstLastElementAt(IEnumerable<int> source, int N)
{
	_ = source.TagFirstLast().ElementAt(8_000);
}

[codecov]

Codecov Report

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

Comparison is base (968455a) 87.77% compared to head (dc1497b) 87.80%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #408      +/-   ##
==========================================
+ Coverage   87.77%   87.80%   +0.03%     
==========================================
  Files         239      239              
  Lines        7385     7404      +19     
  Branches     1703     1707       +4     
==========================================
+ Hits         6482     6501      +19     
  Misses        463      463              
  Partials      440      440              

Impacted Files	Coverage Δ
Source/SuperLinq/TagFirstLast.cs	100.00% <100.00%> (ø)

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