* The make CI action now also runs the entire installcheck-world
with pg_tde setup for all tests
* The meson CI runner doesn't do this yet
* Tools that only worked with the heap am based on an OID check now
also check for the tde_heap OID
* The get_tde_table_am_oid helper function is now moved inside the core,
as it is required by other contrib modules, which do not have access
to the tde code otherwise.
* A few tests that do a custom server setup was disabled based on the
TDE_MODE environment variable. These tests would fail because they
expect that after an initdb and start, the regression suite works,
but that's not the case with tde_heap. These tests can be re-enabled
again after we have options to do this with initdb
