hs-th-abstraction: update to 0.7.0.0.

## 0.7.0.0 -- 2024.03.17
* `DatatypeInfo` now has an additional `datatypeReturnKind` field. Most of the
  time, this will be `StarT`, but this can also be more exotic kinds such as
  `ConT ''UnliftedType` if dealing with primitive types, `UnliftedDatatypes`,
  or `UnliftedNewtypes`.
* `reifyDatatype` and related functions now support primitive types such as
  `Int#`. These will be reified as `DatatypeInfo`s with no `ConstructorInfo`s
  and with `Datatype` as the `datatypeVariant`.
* `normalizeCon` now takes a `Kind` argument representing the return kind of
  the parent data type. (This is sometimes necessary to determine which type
  variables in the data constructor are universal or existential, depending
  on if the variables appear in the return kind.)
* Fix a couple of bugs in which `normalizeDec` would return incorrect results
  for GADTs that use `forall`s in their return kind.

(wiz)