feat: encryption keys in database (#3265)

* enable overwrite of adminUser fields in defaults.yaml

* create schema and table

* cli: create keys

* cli: create keys

* read encryptionkey from db

* merge v2

* file names

* cleanup defaults.yaml

* remove custom errors

* load encryptionKeys on start

* cleanup

* fix merge

* update system defaults

* fix error message

internal/crypto/key_storage.go

@@ -0,0 +1,7 @@
+package crypto
+
+type KeyStorage interface {
+	ReadKeys() (Keys, error)
+	ReadKey(id string) (*Key, error)
+	CreateKeys(...*Key) error
+}