feat(render): implement direct rendering

src/main.zig

@@ -3,7 +3,7 @@ const zterm = @import("zterm");
 
 const App = zterm.App(
     union(enum) {},
-    zterm.Renderer.Plain,
+    zterm.Renderer.Direct,
     true,
 );
 const Key = zterm.Key;
@@ -31,7 +31,7 @@ pub fn main() !void {
     // -> size hint how much should it use?
 
     var layout = Layout.createFrom(layout: {
-        var vstack = Layout.VStack.init(allocator, .{
+        var vstack = Layout.HStack.init(allocator, .{
             Widget.createFrom(blk: {
                 const file = try std.fs.cwd().openFile("./src/app.zig", .{});
                 defer file.close();
@@ -59,6 +59,7 @@ pub fn main() !void {
     // App.Event loop
     while (true) {
         const event = app.nextEvent();
+        log.debug("received event: {s}", .{@tagName(event)});
 
         switch (event) {
             .quit => break,