Refactor mask related components to distinguish row ID and row address

[yanghua]

There are some structs(RowIdSelection, RowIdTreeMap, RowIdMask) in mask.rs that have two kinds of semantics for row address and (stable) row id.

It would be better to split the responsibility of the struct for distinguishing row ID(stable) and row address.

• for row address:

  • RowIdTreeMap -> RowAddrMap（BTreeMap<u32, RowAddrSelection>）
  • RowIdSelection → RowAddrSelection（Full | Partial(RoaringBitmap)）
  • SearchResult(scalar.rs) → RowAddrSearchResult (Exact(RowAddrMap) | AtMost(RowAddrMap)|...)
  • RowIdMask → RowAddrMask

• for (stable) row id:

  • add rowid::RowIdSet (RoaringTreemap，64-bit set)
  • add rowid::RowIdMask
  • add RowIdResolver(row_id -> row_addr)

• for both:

  • add RowSetOps for RowIdSet and RowAddrMap