feat(interactive): Support setting the mutability of edge triplet

[zhanglei1949]

Need one more configuration in schema, to define whether the edge will be added/updated/deleted.

      vertex_type_pair_relations:
        source_vertex: person
        destination_vertex: person
        relation: MANY_TO_MANY
        x_csr_params:
          edge_storage_strategy: BOTH_OUT_IN
         mutability: true

Default value should true.