feat: asset storage (#1696)

* feat: remove assets

* feat: minio implementation

* fix: remove assets from tests

* feat: minio implementation

* feat: Env vars

* fix: sprintf

* fix: sprintf

* Update internal/eventstore/repository/repository.go

Co-authored-by: Livio Amstutz <livio.a@gmail.com>

* fix: error handling

Co-authored-by: Livio Amstutz <livio.a@gmail.com>

internal/command/iam_policy_mail_text_test.go

@@ -107,7 +107,6 @@ func TestCommandSide_AddDefaultMailTextPolicy(t *testing.T) {
 								),
 							),
 						},
-						nil,
 						uniqueConstraintsFromEventConstraint(policy.NewAddMailTextUniqueConstraint("IAM", "mail-text-type", "de")),
 					),
 				),
@@ -295,7 +294,6 @@ func TestCommandSide_ChangeDefaultMailTextPolicy(t *testing.T) {
 									"button-text-change"),
 							),
 						},
-						nil,
 					),
 				),
 			},