Merge branch prefs into master

The changes have been squashed as the commit history and messages were not very carefully crafted. There isn't that much value in preserving random commit messages.

Also due to diverging branches, rebasing or merging it was difficult.

app/src/test/java/Test.java

@@ -0,0 +1,10 @@
+import io.xpipe.app.util.ThreadHelper;
+
+public class Test {
+
+    @org.junit.jupiter.api.Test
+    public void test() {
+        System.out.println("a");
+        ThreadHelper.sleep(1000);
+    }
+}