Added kernel log ui app

src/bin/KernelLog.hx

@@ -0,0 +1,65 @@
+package bin;
+
+import lib.Color;
+import lib.MathI;
+import kernel.log.Log;
+import kernel.ui.WindowContext;
+import lib.ui.UIApp;
+
+using tink.CoreApi;
+
+class KernelLog extends UIApp{
+	private var ctx:WindowContext;
+	private var exitTrigger: Bool -> Void;
+
+	public function new() {}
+
+	public function invoke(context:WindowContext):Future<Bool> {
+		this.ctx = context;
+
+		Log.instance.onLog.handle(()->{
+			render();
+		});
+
+		render();
+
+		return new Future<Bool>(cb -> {
+			this.exitTrigger = cb;
+			return null;
+		});
+	}
+
+	private function render() {
+		ctx.clear();
+		ctx.setCursorPos(0,0);
+
+		var lines = Log.instance.getLines();
+		var height = ctx.getSize().y;
+		var start = MathI.max(lines.length - height,0);
+
+		for (i in start...lines.length) {
+			var line = lines[i];
+
+			switch (line.level){
+				case Info:
+					ctx.setTextColor(Color.White);
+					ctx.write("[INFO] ");
+				case Warn:
+					ctx.setTextColor(Color.Yellow);
+					ctx.write("[WARN] ");
+				case Error:
+					ctx.setTextColor(Color.Red);
+					ctx.write("[ERRO] ");
+				case Debug:
+					ctx.setTextColor(Color.Gray);
+					ctx.write("[DEBG] ");
+				case Silly:
+					ctx.setTextColor(Color.Gray);
+					ctx.write("[SILL] ");
+			}
+
+			ctx.write(line.message);
+			ctx.setCursorPos(0,ctx.getCursorPos().y + 1);
+		}
+	}
+}