Validating JSON on restore.

[danosaure]

Convert the types needed for a JSON import to validate.

[danosaure]

Tried to use Zod, but reviewing nested types. At first look, it seems to expand the types, so it is not as useful to the coder. For example:

type PersistenceHistoryType = {
  date: Date;
  action: PersistenceHistoryActionType;
  message?: string;
};

is converted to:

type PersistenceHistoryType = {
    date: Date;
    action: "import" | "user" | "system";
    message?: string | undefined;
};