Add support for keyed lookups

Author: Genbox

Src/FastData.Benchmarks/Benchmarks/AnalyzerBenchmarks.cs

@@ -18,7 +18,7 @@ public AnalyzerBenchmarks()
         Random rng = new Random(42);
         _data = Enumerable.Range(1, 100).Select(_ => TestHelper.GenerateRandomString(rng, 50)).ToArray();
 
-        StringProperties props = DataAnalyzer.GetStringProperties(_data);
+        StringProperties props = KeyAnalyzer.GetStringProperties(_data);
         _analyzer = new GPerfAnalyzer(_data.Length, props, new GPerfAnalyzerConfig(), new Simulator(_data.Length, GeneratorEncoding.UTF16), NullLogger<GPerfAnalyzer>.Instance);
     }
 

Src/FastData.Benchmarks/Benchmarks/SegmentGeneratorsBenchmarks.cs

@@ -14,7 +14,7 @@ public class SegmentGeneratorsBenchmarks
     private readonly OffsetGenerator _ofGen = new OffsetGenerator();
 
     //We start at 8 and go up to 100 to cover as many cases as possible
-    private readonly StringProperties _props = DataAnalyzer.GetStringProperties(Enumerable.Range(8, 100).Select(x => TestHelper.GenerateRandomString(Random.Shared, x)).ToArray());
+    private readonly StringProperties _props = KeyAnalyzer.GetStringProperties(Enumerable.Range(8, 100).Select(x => TestHelper.GenerateRandomString(Random.Shared, x)).ToArray());
 
     [Benchmark]
     public object BruteForceGenerator() => _bfGen.Generate(_props).ToArray();