ref(event): remove .resize and replace with recursize method calls

This also means that currently the dynamic resizing through the app's
detached thread is not working, as it cannot send size updates. The
examples have been overhauled to still implement intermediate mode
applications accordingly.

src/render.zig

@@ -29,9 +29,12 @@ pub const Buffered = struct {
         }
     }
 
-    pub fn resize(this: *@This(), size: Point) !void {
+    pub fn resize(this: *@This()) !void {
+        const size = terminal.getTerminalSize();
+        if (std.meta.eql(this.size, size)) return;
+
         this.size = size;
-        const n = @as(usize, size.x) * @as(usize, size.y);
+        const n = @as(usize, this.size.x) * @as(usize, this.size.y);
 
         if (!this.created) {
             this.screen = this.allocator.alloc(Cell, n) catch @panic("render.zig: Out of memory.");