Move database logic into separate subdirectory

I'm trying to see if this speeds up builds a bit. May not without a
module boundary, but for now it's nice organization to have as the
program grows.

db/sql/update_oauth_org.sql

@@ -0,0 +1,3 @@
+-- UpdateOauthTokenOrg
+UPDATE oauth_token SET arcgis_id = $1, arcgis_license_type_id = $2
+	WHERE refresh_token = $3;