Improve/Impl (graph) property based vectorization

[imbajin]

Currently, our current vectorized logic is as follows:

1. text vector (raw)
2. graph vector
   • vid(vertexID) based vector
   • property based vector

graph TD
    A["Text (raw)"] --> B("Text Vector - chunk");
    A --> C("Graph - Vertices/Edges extract from Text");
    C --> D("Graph Vector");
    D --> E("VID based Vector - Relatively complete");
    D --> F("Property based Vector - Primitive, needs improvement");

    %% Style to highlight the primitive part
    classDef primitive fill:#f9f,stroke:#333,stroke-width:2px;
    class F primitive;

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The vectorization of vid is relatively complete, but the vectorization based on vertex/edge property is still relatively primitive and needs to be improved in its implementation and application(Could search in the code for details)