Summary:
Tombstoned tablets also come in the yb_local_tablets view,
to make this less confusing, add a tablet state column as well.

The value of this new column will be one of the values present
in the PB enum TabletDataState -
- TABLET_DATA_UNKNOWN
- TABLET_DATA_COPYING
- TABLET_DATA_READY
- TABLET_DATA_DELETED
- TABLET_DATA_TOMBSTONED
- TABLET_DATA_SPLIT_COMPLETED
- TABLET_DATA_INIT_STARTED

Depends on D40868
Jira: DB-13147

Test Plan:
./yb_build.sh --cxx-test pg_tablespaces-test --gtest_filter PgTablespacesTest.TombstonedTabletInYbLocalTablets
./yb_build.sh --java-test TestYsqlUpgrade

Reviewers: jason, ishan.chhangani, hbhanawat

Reviewed By: ishan.chhangani

Subscribers: yql

Differential Revision: https://phorge.dev.yugabyte.com/D40858