Add JSON text renderer (#1086)

* Add JsonText widget to render highlighted JSON

Closes #1051

examples/Console/Json/Json.csproj

@@ -0,0 +1,16 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ExampleTitle>Json</ExampleTitle>
+    <ExampleDescription>Demonstrates how to print syntax highlighted JSON.</ExampleDescription>
+    <ExampleGroup>Widgets</ExampleGroup>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Shared\Shared.csproj" />
+    <ProjectReference Include="..\..\..\src\Spectre.Console.Json\Spectre.Console.Json.csproj" />
+  </ItemGroup>
+
+</Project>

examples/Console/Json/Program.cs

@@ -0,0 +1,36 @@
+using Spectre.Console;
+using Spectre.Console.Json;
+
+namespace Json;
+
+public static class Program
+{
+    public static void Main()
+    {
+        var json = new JsonText(
+            """
+            { 
+                "hello": 32, 
+                "world": { 
+                    "foo": 21, 
+                    "bar": 255,
+                    "baz": [
+                        0.32, 0.33e-32,
+                        0.42e32, 0.55e+32,
+                        {
+                            "hello": "world",
+                            "lol": null
+                        }
+                    ]
+                } 
+            }
+            """);
+
+        AnsiConsole.Write(
+            new Panel(json)
+                .Header("Some JSON in a panel")
+                .Collapse()
+                .RoundedBorder()
+                .BorderColor(Color.Yellow));
+    }
+}