add: [tools] a simple generator for the list of taxonomies to be included in the RFC

tools/rfc-genlist.py

@@ -0,0 +1,8 @@
+import json
+import os
+filename = os.path.join("../", "MANIFEST.json")
+with open(filename) as fp:
+	t = json.load(fp)
+
+for taxo in sorted(t['taxonomies'], key=lambda k: k['name']):
+    print ("{}:\n:   {}\n".format(taxo['name'], taxo['description']))