Add risk treatment

Signed-off-by: gearnode <bryan@frimin.fr>

pkg/coredata/migrations/20250412T100700Z.sql

@@ -0,0 +1,4 @@
+CREATE TYPE risk_treatment AS ENUM ('MITIGATED', 'TRANSFERRED', 'AVOIDED', 'ACCEPTED');
+
+ALTER TABLE risks ADD COLUMN treatment risk_treatment NOT NULL DEFAULT 'MITIGATED';
+ALTER TABLE risks ALTER COLUMN treatment DROP DEFAULT;