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Feature description

Currently, all config structs contain Option<>. These options have some value if it was set in the configuration file or environment variables, and None otherwise. Default values are not taken into consideration at this point.

Whenever an option is used in the application code, the consumer must take care of unpacking the Option<> and substituting a default value if needed. If an option is used in multiple places, this unpacking needs to be repeated every time.

Desired solution

All options should be initialised with their respective default values when loading the config. This would have two benefits:

1. All default values can be defined in one place.
2. Handling of config options is simplied throughout the code.

Alternatives considered

none

Additional context

No response