linkers: fix LLD linker response file handling

[benoit-pierre]

When building with LLD as the linker, response files are never used.

It's because of an issue with the LLVMDynamicLinker class hierarchy:

▸ python <<'EOF'
from mesonbuild.linkers.linkers import LLVMDynamicLinker
print(LLVMDynamicLinker(['lld'], '', '', []).get_accepts_rsp())
EOF
False

After correcting the base classes so GNU-like linkers all default to supporting response files:

▸ python <<'EOF'
from mesonbuild.linkers.linkers import LLVMDynamicLinker
print(LLVMDynamicLinker(['lld'], '', '', []).get_accepts_rsp())
EOF
True

I added a test, but the CI would also need a build that actually use LLD as a linker.

[thesamesam]

Could you rebase for a fresh CI run now #11715 is in?

[dcbaker]

One small nit, otherwise this looks good.