[lld-macho][nfc] Rename some tests

"stub" is a bit too overloaded... we were using it to refer to
TAPI files, but it's also the name for the PLT trampolines in Mach-O.
Going ahead, let's just use "TAPI" or ".tbd" to refer to TAPI stuff.

Reviewed By: #lld-macho, oontvoo

Differential Revision: https://reviews.llvm.org/D99807

GitOrigin-RevId: 9456e720ec8465a9da2acbda14cd7d67cddf16f7
diff --git a/test/MachO/stub-framework.s b/test/MachO/tapi-framework.s
similarity index 100%
rename from test/MachO/stub-framework.s
rename to test/MachO/tapi-framework.s
diff --git a/test/MachO/stub-link-by-arch.s b/test/MachO/tapi-link-by-arch.s
similarity index 100%
rename from test/MachO/stub-link-by-arch.s
rename to test/MachO/tapi-link-by-arch.s
diff --git a/test/MachO/stub-link.s b/test/MachO/tapi-link.s
similarity index 100%
rename from test/MachO/stub-link.s
rename to test/MachO/tapi-link.s
diff --git a/test/MachO/dylink-lazy.s b/test/MachO/x86-64-stubs.s
similarity index 100%
rename from test/MachO/dylink-lazy.s
rename to test/MachO/x86-64-stubs.s