Smaller workaround for the fact that some function are not exported

sixtyfps_runtime/corelib/lib.rs

@@ -61,3 +61,15 @@ pub type ComponentRefPin<'a> = core::pin::Pin<abi::datastructures::ComponentRef<
 
 pub mod eventloop;
 mod item_rendering;
+
+/// One need to use at least one function in each module in order to get them
+/// exported in the final binary.
+/// This only use functions from modules which are not otherwise used.
+#[doc(hidden)]
+#[cold]
+pub fn use_modules() -> usize {
+    abi::tests::sixtyfps_test_ellapse_time as usize
+        + abi::signals::sixtyfps_signal_init as usize
+        + abi::sharedarray::sixtyfps_shared_array_drop as usize
+        + layout::solve_grid_layout as usize
+}