Defined the schema for the Data Source table

Ran migration to generate new table

Author: horatiorosa

db/migration/0037_sloppy_wolfsbane.sql

@@ -0,0 +1,6 @@
+CREATE TABLE "data_source" (
+	"id" text PRIMARY KEY NOT NULL,
+	"name" text,
+	"version" text,
+	"retrieve_date" date
+);