add TODO to CRF reader

code/UNFCCC_CRF_reader/UNFCCC_CRF_reader.py

@@ -0,0 +1,21 @@
+import pandas as pd
+
+
+def read_crf_tables(
+
+)->pd.DataFrame:
+    """
+    Read given tables from file and return result as pandas dataframe
+    """
+
+# functions:
+# * production functions
+# ** read one table for a country
+# ** read alist of tables for one country
+# ** convert to IF and NC and save
+# * testing fucntions
+# ** read one or more table(s) for all countries
+#    (and a if desired only a single year) and write
+#    output files with missing sectors etc
+# **
+