feat: device authorization RFC 8628 (#5646)

* device auth: implement the write events

* add grant type device code

* fix(init): check if default value implements stringer

---------

Co-authored-by: adlerhurst <silvan.reusser@gmail.com>

internal/domain/deviceauthstate_string.go

@@ -0,0 +1,28 @@
+// Code generated by "stringer -type=DeviceAuthState -linecomment"; DO NOT EDIT.
+
+package domain
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[DeviceAuthStateUndefined-0]
+	_ = x[DeviceAuthStateInitiated-1]
+	_ = x[DeviceAuthStateApproved-2]
+	_ = x[DeviceAuthStateDenied-3]
+	_ = x[DeviceAuthStateExpired-4]
+	_ = x[DeviceAuthStateRemoved-5]
+}
+
+const _DeviceAuthState_name = "undefinedinitiatedapproveddeniedexpiredremoved"
+
+var _DeviceAuthState_index = [...]uint8{0, 9, 18, 26, 32, 39, 46}
+
+func (i DeviceAuthState) String() string {
+	if i >= DeviceAuthState(len(_DeviceAuthState_index)-1) {
+		return "DeviceAuthState(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _DeviceAuthState_name[_DeviceAuthState_index[i]:_DeviceAuthState_index[i+1]]
+}