adding invoice db layer

src/clj/auto_ap/db/invoices.clj

@@ -0,0 +1,12 @@
+(ns auto-ap.db.invoices
+  (:require [clojure.java.jdbc :as j]
+            [auto-ap.db.utils :use [clj->db db->clj conn]]))
+
+(defn insert-multi! [rows]
+  (j/insert-multi! conn
+                   :invoices
+                   (map clj->db rows)))
+
+(defn get-all []
+  (map db->clj (j/query conn "SELECT * FROM invoices")))
+