feat(medusa,types): create promotion flows (#7029)

* chore: create promotion phase

* chore: fix specs + minor ui changes

* chore: minor fixes

* chore: added changeset

* address pr reviews

* chore: fix spec

* Update packages/admin-next/dashboard/src/v2-routes/promotions/common/edit-rules/edit-rules.tsx

Co-authored-by: Frane Polić <16856471+fPolic@users.noreply.github.com>

* chore: fix specs

---------

Co-authored-by: Frane Polić <16856471+fPolic@users.noreply.github.com>

integration-tests/modules/__tests__/promotion/admin/promotion-rules.spec.ts

@@ -834,8 +834,8 @@ medusaIntegrationTestRunner({
           expect(response.data.values.length).toEqual(2)
           expect(response.data.values).toEqual(
             expect.arrayContaining([
-              { label: "Afghan Afghani", value: "afn" },
-              { label: "Albanian Lek", value: "all" },
+              { label: "afn", value: "afn" },
+              { label: "all", value: "all" },
             ])
           )