Update emoji support

* Add constants for emojis
* Move emoji shortcode rendering to Markup
* Add documentation
* Add example
* Add tests

resources/scripts/Generator/Templates/Color.Generated.template

@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Generated {{ date.now | date.to_string `%Y-%m-%d %k:%M` }}
+//     Generated {{ date.now | date.to_string `%F %R` }}
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.

resources/scripts/Generator/Templates/ColorPalette.Generated.template

@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Generated {{ date.now | date.to_string `%Y-%m-%d %k:%M` }}
+//     Generated {{ date.now | date.to_string `%F %R` }}
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.

resources/scripts/Generator/Templates/ColorTable.Generated.template

@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Generated {{ date.now | date.to_string `%Y-%m-%d %k:%M` }}
+//     Generated {{ date.now | date.to_string `%F %R` }}
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.

resources/scripts/Generator/Templates/Emoji.Generated.template

@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Generated {{ date.now | date.to_string `%Y-%m-%d %k:%M` }}
+//     Generated {{ date.now | date.to_string `%F %R` }}
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.
@@ -10,20 +10,34 @@
 
 using System;
 using System.Collections.Generic;
-using System.Diagnostics.CodeAnalysis;
 
 namespace Spectre.Console
 {
     /// <summary>
-    /// Utility class for working with emojis.
+    /// Utility for working with emojis.
     /// </summary>
-    internal static partial class Emoji
+    public static partial class Emoji
     {
         private static readonly Dictionary<string, string> _emojis
             = new Dictionary<string, string>(StringComparer.InvariantCultureIgnoreCase)
         {
-            {{~ for emoji in emojis }}            { "{{ emoji.name }}", "{{ emoji.code }}" },
+            {{~ for emoji in emojis ~}}
+            { "{{ emoji.identifier }}", Emoji.Known.{{ emoji.name }} },
             {{~ end ~}}
         };
+
+        /// <summary>
+        /// Contains all predefined emojis.
+        /// </summary>
+        public static class Known
+        {
+            {{- for emoji in emojis }}
+            /// <summary>
+            /// Gets the "{{ emoji.identifier }}" emoji.
+            /// Description: {{ emoji.description }}.
+            /// </summary>
+            public const string {{ emoji.name }} = "{{ emoji.code }}";
+            {{~ end ~}}
+        }
     }
 }

resources/scripts/Generator/Templates/Emoji.Json.template

@@ -0,0 +1,10 @@
+[
+    {{~ for x in 0..(emojis.size-1) ~}}
+    {
+        "id": "{{ emojis[x].identifier }}",
+        "name": "{{ emojis[x].name }}",
+        "description": "{{ emojis[x].description }}",
+        "code": "{{ emojis[x].normalized_code }}"
+    }{{ if x != (emojis.size-1) }},{{ end }}
+    {{~ end ~}}
+]