Add global init variable for stdlib stateful POUs

If not for these changes, using a stdlib stateful POU inside a function would not compile

Author: volsa

libs/stdlib/src/bistable_functionblocks.rs

@@ -19,6 +19,12 @@ pub struct EmptyVTable;
 #[no_mangle]
 #[used]
 pub static __vtable_SR: EmptyVTable = EmptyVTable {};
+
+#[allow(non_upper_case_globals)]
+#[no_mangle]
+#[used]
+pub static __SR__init: SetResetParams =
+    SetResetParams { __vtable: 0, set: false, reset: false, output: false };
 ///.
 /// Bistable function, set dominant
 ///
@@ -32,6 +38,13 @@ pub extern "C" fn SR(params: &mut SetResetParams) {
 #[no_mangle]
 #[used]
 pub static __vtable_RS: EmptyVTable = EmptyVTable {};
+
+#[allow(non_upper_case_globals)]
+#[no_mangle]
+#[used]
+pub static __RS__init: SetResetParams =
+    SetResetParams { __vtable: 0, set: false, reset: false, output: false };
+
 ///.
 /// Bistable function, reset dominant
 ///