Add FIGlet text support

Closes #97

src/Spectre.Console/Internal/ResourceReader.cs

@@ -0,0 +1,32 @@
+using System;
+using System.IO;
+
+namespace Spectre.Console.Internal
+{
+    internal static class ResourceReader
+    {
+        public static string ReadManifestData(string resourceName)
+        {
+            if (resourceName is null)
+            {
+                throw new ArgumentNullException(nameof(resourceName));
+            }
+
+            var assembly = typeof(ResourceReader).Assembly;
+            resourceName = resourceName.ReplaceExact("/", ".");
+
+            using (var stream = assembly.GetManifestResourceStream(resourceName))
+            {
+                if (stream == null)
+                {
+                    throw new InvalidOperationException("Could not load manifest resource stream.");
+                }
+
+                using (var reader = new StreamReader(stream))
+                {
+                    return reader.ReadToEnd().NormalizeLineEndings();
+                }
+            }
+        }
+    }
+}