Refactoring Rendering backend

Ghost.Shader.Test/Program.cs

@@ -0,0 +1,18 @@
+using Ghost.Shader;
+
+var source = File.ReadAllText("F:\\csharp\\GhostEngine\\Ghost.Graphics\\test.ghostshader");
+var lexer = new Lexer(source);
+
+//foreach (var token in lexer.Tokenize())
+//{
+//    Console.WriteLine($"{token.type} : '{token.lexeme}' at line {token.line}");
+//}
+
+var stream = new TokenStream(lexer.Tokenize().ToArray());
+var shaderInfo = ShaderCompiler.ParseShaders(stream);
+var model = ShaderCompiler.SemanticAnalysis(shaderInfo[0], out var errors);
+
+foreach (var error in errors)
+{
+    Console.WriteLine(error);
+}