[Feature Request] Add check action to buildOptions

[MrcSnm]

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System information

• dub version: dub 1.29.0
• OS Platform and distribution: Windows 10
• compiler version dmd 2.100

Feature Addition

Add checkaction for dub buildOptions: https://dlang.org/dmd-windows.html#switch-checkaction

[nordlow]

Can we set buildOptions from the command-line?

[nordlow]

This a good idea but having to do specialized mappings of compiler flags to buildOptions is not scalable. There's always gonna be compiler flags that haven't been mapped. Why don't we provide a way to append compiler flags via --dflags=.. CLI options instead of DFLAGS dub ... which doesn't always work. For instance

DFLAGS=-checkaction=context dub ... fails as in cases such as https://github.com/libmir/mir-algorithm/pull/417#issuecomment-1220319421.

[WebFreak001]

@nordlow dflags can be added per-dependency now, this buildOption suggestion is still a useful one

[nordlow]

Do you have a reference to this new feature you're referring to?

[WebFreak001]

@nordlow I meant specifying dflags on dependencies: https://docs.webfreak.org/dub-reference/build_settings/#dependencies