Provide a way to disable modules to reduce package size

[lemtea8]

Is your feature request related to a problem? Please describe.
OpenCV is really powerful and has many features, but in general usecases we don't need every features.
Having the ability to disable unused modules can drastically reduce binary size, which is always great for mobile apps.

Describe the solution you'd like
Maybe use a yaml file to specify what modules to include and exclude, and a custom build is triggered to build from source locally.

[lemtea8]

I found that I can build dartcv which has options in CMakeLists.txt.
For anyone who also wants this feature, go to https://github.com/rainyl/dartcv

[rainyl]

Yes you can always specify the modules by yourself, either using cmake options or cocoapods subspecs, but providing switches via yaml configuration is a better choice, if more users require this feature in the future, I will add it when having some free time.

[eramirez3]

Please it will be a great help enable switches via yaml, thanks in advance for this wonderful project!

[rainyl]

Okay I will reopen this issue.