adding ADR column to vaccineDistributionByZipcode table

src/ADRColumnAdder.py

@@ -0,0 +1,15 @@
+import pandas as pd
+
+class ADRColumnAdder:
+    
+    def __init__(self, ADR_by_Batchcode):
+        self.ADR_by_Batchcode = ADR_by_Batchcode
+
+    def addADRColumn(self, vaccineDistributionByZipcode):
+        return pd.merge(
+            vaccineDistributionByZipcode,
+            self.ADR_by_Batchcode,
+            how = 'left',
+            left_on = 'LOT_NUMBER',
+            right_index = True,
+            validate = 'many_to_one')