add tree_issupervised function and its resolve field

src/include/66/tree.h

src/lib66/exec/ssexec_inresolve.c

src/lib66/tree/deps-lib/deps

src/lib66/tree/tree_issupervised.c

src/lib66/tree/tree_resolve_copy.c

src/lib66/tree/tree_resolve_get_field_tosa.c

src/lib66/tree/tree_resolve_modify_field.c

src/lib66/tree/tree_resolve_read_cdb.c

src/lib66/tree/tree_resolve_write_cdb.c