Implement FindMatchingZone(..)

Sets m_compare to the matched index. It supports multiple flags. It can
be run by comparing function name, source file, line number, and any
combination thereof. When searching for a match, we do 3 runs, quitting
out if any of them succeed.

  1. Look for zone with same function same, source file, line number.
  2. Look for zone with same function same, source file.
  3. Look for zone with same function same.

server/TracyView.hpp

@@ -251,6 +251,7 @@ private:
     uint64_t GetZoneThread( const ZoneEvent& zone ) const;
     uint64_t GetZoneThread( const GpuEvent& zone ) const;
     const GpuCtxData* GetZoneCtx( const GpuEvent& zone ) const;
+    bool FindMatchingZone( int prev0, int prev1, int flags );
     const ZoneEvent* FindZoneAtTime( uint64_t thread, int64_t time ) const;
     uint64_t GetFrameNumber( const FrameData& fd, int i, uint64_t offset ) const;
     const char* GetFrameText( const FrameData& fd, int i, uint64_t ftime, uint64_t offset ) const;
@@ -447,6 +448,13 @@ private:
         NeedsJoin
     };
 
+    enum
+    {
+        FindMatchingZoneFlagDefault = 0,
+        FindMatchingZoneFlagSourceFile = (1 << 0),
+        FindMatchingZoneFlagLineNum = (1 << 1),
+    };
+
     std::atomic<SaveThreadState> m_saveThreadState { SaveThreadState::Inert };
     std::thread m_saveThread;
     std::atomic<size_t> m_srcFileBytes { 0 };