ScanRight: ICollection<> implementation

[viceroypenguin]

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

Fixes #386

// * 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
ScanRightCount	Syste(...)nt32] [50]	10000	9.686 ns	0.1100 ns	0.1029 ns	0.0025	0.0000	32 B
ScanRightCount	Syste(...)nt32] [47]	10000	10.246 ns	0.0946 ns	0.0885 ns	0.0025	0.0000	32 B
ScanRightCount	Syste(...)nt32] [70]	10000	88,253.740 ns	307.4105 ns	256.7017 ns	6.3477	0.7324	80200 B
ScanRightCopyTo	Syste(...)nt32] [50]	10000	38,673.586 ns	158.7586 ns	123.9483 ns	3.1738	0.0610	40056 B
ScanRightCopyTo	Syste(...)nt32] [47]	10000	29,826.876 ns	206.6878 ns	183.2234 ns	3.1738	0.0305	40056 B
ScanRightCopyTo	Syste(...)nt32] [70]	10000	101,039.215 ns	472.9422 ns	419.2510 ns	14.7705	1.0986	186384 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).ToList().Select(SuperEnumerable.Identity),
			i,
		};
		yield return new object[]
		{
			Enumerable.Range(1, i).ToHashSet(),
			i,
		};
		yield return new object[]
		{
			Enumerable.Range(1, i).ToList(),
			i,
		};
	}
}

[Benchmark]
[ArgumentsSource(nameof(EnumerableArguments))]
public void ScanRightCount(IEnumerable<int> source, int N)
{
	_ = source.ScanRight((a, b) => a + b).Count();
}

[Benchmark]
[ArgumentsSource(nameof(EnumerableArguments))]
public void ScanRightCopyTo(IEnumerable<int> source, int N)
{
	_ = source.ScanRight((a, b) => a + b).ToArray();
}

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.08 🎉

Comparison is base (244f777) 87.44% compared to head (56a51cb) 87.52%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #387      +/-   ##
==========================================
+ Coverage   87.44%   87.52%   +0.08%     
==========================================
  Files         239      239              
  Lines        7207     7239      +32     
  Branches     1677     1681       +4     
==========================================
+ Hits         6302     6336      +34     
+ Misses        464      462       -2     
  Partials      441      441              

Impacted Files	Coverage Δ
Source/SuperLinq/Do.cs	97.67% <ø> (ø)
Source/SuperLinq/FillBackward.cs	98.00% <ø> (ø)
Source/SuperLinq/FillForward.cs	100.00% <ø> (ø)
Source/SuperLinq/Interleave.cs	100.00% <ø> (ø)
Source/SuperLinq/Rank.cs	100.00% <ø> (ø)
Source/SuperLinq/Scan.cs	100.00% <ø> (ø)
Source/SuperLinq/ScanRight.cs	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

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