Move namespace test files

...rt/namespace/get-nested-namespace-props-nrml-1_FIXTURE.js

...rt/namespace/get-nested-namespace-props-nrml-2_FIXTURE.js

...rt/namespace/get-nested-namespace-props-nrml-3_FIXTURE.js

...pressions/dynamic-import/namespace/module-code_FIXTURE.js

...essions/dynamic-import/namespace/own-keys-sort_FIXTURE.js

...ic-import/namespace/promise-then-ns-Symbol-toStringTag.js

...c-import/namespace/promise-then-ns-define-own-property.js

...mespace/promise-then-ns-delete-exported-init-no-strict.js

.../namespace/promise-then-ns-delete-exported-init-strict.js

...amespace/promise-then-ns-delete-non-exported-no-strict.js

...t/namespace/promise-then-ns-delete-non-exported-strict.js

...ns/dynamic-import/namespace/promise-then-ns-extensible.js

...space/promise-then-ns-get-nested-namespace-dflt-direct.js

...ace/promise-then-ns-get-nested-namespace-dflt-indirect.js

...espace/promise-then-ns-get-nested-namespace-props-nrml.js

...espace/promise-then-ns-get-own-property-str-found-init.js

...mespace/promise-then-ns-get-own-property-str-not-found.js

...-import/namespace/promise-then-ns-get-own-property-sym.js

...dynamic-import/namespace/promise-then-ns-get-str-found.js

...mic-import/namespace/promise-then-ns-get-str-not-found.js