Add support for bar charts

Closes #103

examples/Charts/Charts.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net5.0</TargetFramework>
+    <IsPackable>false</IsPackable>
+    <Title>Charts</Title>
+    <Description>Demonstrates how to render charts in a console.</Description>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\Spectre.Console\Spectre.Console.csproj" />
+  </ItemGroup>
+
+</Project>

examples/Charts/Program.cs

@@ -0,0 +1,21 @@
+using Spectre.Console;
+
+namespace InfoExample
+{
+    public static class Program
+    {
+        public static void Main()
+        {
+            var chart = new BarChart()
+                .Width(60)
+                .Label("[green bold underline]Number of fruits[/]")
+                .CenterLabel()
+                .AddItem("Apple", 12, Color.Yellow)
+                .AddItem("Orange", 54, Color.Green)
+                .AddItem("Banana", 33, Color.Red);
+
+            AnsiConsole.WriteLine();
+            AnsiConsole.Render(chart);
+        }
+    }
+}