add long trajectories as zip files

Long trajectories contain large number of individual small image files which cause issues during upload, currently we provide the data for long file in compress form.

exp_long_fjord_traj_a/exp_long_fjord_traj_a.zip

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:55d1815158c57565c3389ce10cc76ebf06e13a9095876ce3d70a0a3ee9c2ac92
+size 84692499

exp_long_fjord_traj_b/exp_long_fjord_traj_b.zip

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6ce7c1246ac0c7c168007fa69238b6580c2510df4dabf7ed87bd368b0ecb38f8
+size 116488895