[CodeView] Extend the `MemberAttributes` interface with the `isStatic` method

[aleksandr.urakov]

Summary

This patch extends the MemberAttributes interface with the isStatic method. It is needed for D56126.

[aleksandr.urakov]

Fix a typo.

[aleksandr.urakov]

Thanks!

llvm/trunk/include/llvm/DebugInfo/CodeView/TypeRecord.h

struct MemberAttributes {
   }
 
   /// Does this member introduce a new virtual method.
   bool isIntroducedVirtual() const {
     auto MP = getMethodKind();
     return MP == MethodKind::IntroducingVirtual ||
            MP == MethodKind::PureIntroducingVirtual;
   }
+
+  /// Is this method static.
+  bool isStatic() const {
+    return getMethodKind() == MethodKind::Static;
+  }
 };
 
 // Does not correspond to any tag, this is the tail of an LF_POINTER record
 // if it represents a member pointer.
 class MemberPointerInfo {
 public:
   MemberPointerInfo() = default;