Update for OpenSwiftUI observation support (#180)

Author: Kyle-Ye

Package.resolved

@@ -9,11 +9,16 @@
 
 const OAGAttribute OAGAttributeNil = OAGAttribute(OAG::AttributeID::Kind::Null);
 
-OAGAttribute OAGGraphGetCurrentAttribute() {
+OAGAttribute OAGGraphGetCurrentAttribute(void) {
     // TODO
     return OAGAttributeNil;
 }
 
+bool OAGGraphCurrentAttributeWasModified(void) {
+    // TODO
+    return false;
+}
+
 namespace {
 OAGAttribute create_offset_attribute(OAGAttribute attribute, uint64_t offset, std::optional<uint64_t> size) {
     // TODO

Sources/OpenAttributeGraphCxx/Attribute/OAGAttribute.cpp

@@ -18,6 +18,8 @@
 
 OAG_ASSUME_NONNULL_BEGIN
 
+OAG_IMPLICIT_BRIDGING_ENABLED
+
 OAG_EXTERN_C_BEGIN
 
 OAG_EXPORT
@@ -27,6 +29,10 @@ OAG_EXPORT
 OAG_REFINED_FOR_SWIFT
 OAGAttribute OAGGraphGetCurrentAttribute(void);
 
+OAG_EXPORT
+OAG_REFINED_FOR_SWIFT
+bool OAGGraphCurrentAttributeWasModified(void);
+
 OAG_EXPORT
 OAG_REFINED_FOR_SWIFT
 OAGAttribute OAGGraphCreateOffsetAttribute(OAGAttribute attribute, long offset) OAG_SWIFT_NAME(OAGAttribute.create(self:offset:));
@@ -161,6 +167,8 @@ void OAGGraphWithUpdate(
 
 OAG_EXTERN_C_END
 
+OAG_IMPLICIT_BRIDGING_DISABLED
+
 OAG_ASSUME_NONNULL_END
 
 #endif /* OAGAttribute_h */