Added (manually) produced simple1 sample file fore core

core/simple1_nwb:1.4.0_hdmf:2.3.0.nwb

@@ -0,0 +1 @@
+../.git/annex/objects/P7/49/MD5E-s151648--3323b59fb89994cfa747b6141b184464.0.nwb/MD5E-s151648--3323b59fb89994cfa747b6141b184464.0.nwb