Add addParameterless option, fix spelling

[DomasM]

Add addParameterless option - implement https://github.com/k94ll13nn3/AutoConstructor/issues/119

:this() call calling generated parameterless constructor is never emmited because:

• that wouldn't achieve anything as there is no code in this constructor
• generated constructor is marked as obsolete to avoid direct, so code would not compile

Anything to inject?	addParameterless	Generation result
No	False	Analyzer error
No	True	Only empty ctor
Yes	False	Ctor with arguments
Yes	True	Two ctors: empty and with arguments

changelog:

## [5.4.0] - 2024-05-21

### Added

- Add `addParameterless` option on `AutoConstructor` attribute to generate parameterless constructor for serialization use.
- Add analyzer for base type parameterless constructor existence  when using `addParameterless` option

[k94ll13nn3]

Thanks, I will take a look this week. Just so you know, the CHANGELOG is automatically generated from the Github releases so your changes will be overridden.

[k94ll13nn3]

I think that options must be provided to

• remove the obsolete attribute if wanted
• customize the obsolete message

I don't want this package to be linked to "serialization", and generating a parameterless constructor can be useful outside this context so this should be possible.

[DomasM]

can we do this via project level settings:

AutoConstructor_MarkParameterlessConstructorAsObsolete (bool) AutoConstructor_ParameterlessConstructorObsoleteMessage (string)

and what are the default values then?

specifying these options with every [AutoConstructor] attribute usage would be as much boilerplate as just writing the constructor itself without any generator.

[k94ll13nn3]

can we do this via project level settings:

AutoConstructor_MarkParameterlessConstructorAsObsolete (bool) AutoConstructor_ParameterlessConstructorObsoleteMessage (string)

Yes that is what I was thinking

and what are the default values then?

specifying these options with every [AutoConstructor] attribute usage would be as much boilerplate as just writing the constructor itself without any generator.

The default can be what you already defined (so true for the obsolete and the comment that you already made).

[DomasM]

Added these two options as discussed.

[DomasM]

I agree that passing around a boolean flag is not very elegant - here is an alternative implementation by having two different methods https://github.com/DomasM/AutoConstructor/commit/01f475580a6492bff7490e387284a5952fa9cd62 if this is preferred, I can amend that commit to this branch

[k94ll13nn3]

It's ok, you can leave it like it is. I will try merge it and release it before the end of the week.

[DomasM]

noticed that addDefaultBaseAttribute option is not handled correctly, added test and moved to separate generation methods