fix missing configs

config/neuralbody/network/nerf.yml

@@ -0,0 +1,21 @@
+network_module: easymocap.neuralbody.model.nerf.Nerf
+network_args:
+  # sample_args:
+  #   method: uniform
+  #   N_samples: 64
+  sample_args:
+    method: importance
+    N_samples: 64
+    N_importance: 32
+  D: 8
+  W: 256
+  dim_pts: 3
+  dim_dir: 3
+  xyz_res: 10
+  view_res: 4
+  skips: [4]
+  use_viewdirs: True
+  use_occupancy: True
+  linear_func: Linear
+  act_fn: expsoftplus
+  init_bias: -2.