Add tags to object info (#4941)

Author: oitel

source/MRMesh/MRObject.cpp

@@ -530,6 +530,9 @@ std::vector<std::string> Object::getInfoLines() const
 
     res.push_back( "type: " + getClassName() );
     res.push_back( "mem: " + bytesString( heapBytes() ) );
+    res.push_back( fmt::format( "tags: {}", tags_.size() ) );
+    for ( const auto& tag : tags_ )
+        res.push_back( fmt::format( "· {}", tag ) );
     return res;
 }