Add JIF results; Estimate ellipticity using second moments (#1078)

* update code and notebook; upload a link to our jif repos; add a notebook to show lsst's ellipticity estimate

* update notebooks

* add lsst ellipticity est

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Co-authored-by: Yicun Duan <[email protected]>

Author: YicunDuanUMich

bliss/conf/base_config.yaml

@@ -262,7 +262,7 @@ surveys:
         prepare_data_processes_num: 4
         data_in_one_cached_file: 1250
         splits: 0:80/80:90/90:100
-        batch_size: 64
+        batch_size: 32
         num_workers: 4
         cached_data_path: ${paths.output}/dc2_cached_data
         train_transforms: