[Rust] Misc things for WARP

- Make LowLevelILFunction::from_raw public"
- Add a helper to get lifted il from flow graph

Author: emesare

rust/src/flowgraph.rs

@@ -124,6 +124,10 @@ impl FlowGraph {
         unsafe { BNSetViewForFlowGraph(self.handle, view_ptr) }
     }
 
+    pub fn lifted_il(&self) -> Option<Ref<LowLevelILRegularFunction>> {
+        self.function()?.lifted_il().ok()
+    }
+
     pub fn low_level_il(&self) -> Option<Ref<LowLevelILRegularFunction>> {
         unsafe {
             let llil_ptr = BNGetFlowGraphLowLevelILFunction(self.handle);

rust/src/low_level_il/function.rs

@@ -70,7 +70,7 @@ where
         }
     }
 
-    pub(crate) unsafe fn from_raw(handle: *mut BNLowLevelILFunction) -> Self {
+    pub unsafe fn from_raw(handle: *mut BNLowLevelILFunction) -> Self {
         Self::from_raw_with_arch(handle, None)
     }