Support additional types

[sheb-gregor]

It would be great to support different types as config fields, not only string.
So let's add additional types along with the default noble.Secret.

For example:

• noble.Int
• noble.Int32
• noble.Int64
• noble.Uint
• noble.Uint32
• noble.Uint64
• noble.Float32
• noble.Float64
• Slices and Maps.
• Generic type for any custom user type.

Here can be found a nice example: https://github.com/urfave/cli.

Limitation

The minimal required version of Go should be upgraded to go 1.18.