all: rename the gioui.org/ui module to gioui.org

The "ui" is redundant and stutters.

Signed-off-by: Elias Naur <mail@eliasnaur.com>

app/log_ios.m

@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: Unlicense OR MIT
+
+// +build darwin,ios
+
+@import Foundation;
+
+#include "log_ios.h"
+
+void nslog(char *str) {
+	NSLog(@"%@", @(str));
+}