added configurable states for approved/declined order
introduced new Magento statuses for approved and declined (with migrations)
reverting php_dk local changes in order to be able to pull subtree
Squashed 'lib/riskified_php_sdk/' changes from ebcfd30..e047fd7

e047fd7 added old_status field to notification model bumped up the SDK version

git-subtree-dir: lib/riskified_php_sdk
git-subtree-split: e047fd7d237a95e58a2a41aa31e7c3a37558278c
Merge commit '700d372602410875a0876dc38e9ac334c906dfde'