chg: [doc] backscatter.io documentation added

doc/expansion/backscatter_io.json

@@ -0,0 +1,8 @@
+{
+    "description": "Query backscatter.io (https://backscatter.io/).",
+    "requirements": ["backscatter python library"],
+    "features": "The module takes a source or destination IP address as input and displays the information known by backscatter.io.\n\n",
+    "references": ["https://pypi.org/project/backscatter/"],
+    "input": "IP addresses.",
+    "output": "Text containing a history of the IP addresses especially on scanning based on backscatter.io information ."
+}