chore: import upstream snapshot with attribution

easygraph/functions/graph_embedding/__init__.py

@@ -0,0 +1,13 @@
+from .deepwalk import *
+from .NOBE import *
+from .node2vec import *
+
+
+try:
+    from .line import *
+    from .sdne import *
+except:
+    print(
+        "Warning raise in module:graph_embedding. Please install packages Pytorch"
+        " before you use functions related to graph_embedding"
+    )