Make Context#mode field pub (#286)

feat: make Context#mode field pub instead of pub(crate)

This change will allow to locate the absolute paths to the generated files using Context#mode + Context#item_path

pilota-build/src/middle/context.rs

@@ -66,7 +66,7 @@ pub struct Context {
     pub(crate) change_case: bool,
     pub(crate) codegen_items: Arc<[DefId]>,
     pub(crate) path_resolver: Arc<dyn PathResolver>,
-    pub(crate) mode: Arc<Mode>,
+    pub mode: Arc<Mode>,
     pub(crate) split: bool,
     pub(crate) keep_unknown_fields: Arc<FxHashSet<DefId>>,
     pub location_map: Arc<FxHashMap<DefId, DefLocation>>,