Synchronize cpp examples with python

[csaba-luxonis]

This PR is WIP, will be updated once it's ready to review.

[Luxonis-Brandon]

Thanks for making these. These will be great to have! Will be so nice to have full Python and C++ examples for folks.

[Luxonis-Brandon]

Oh and once these are done @csaba-luxonis - we should do the switcher on our docs so folks can switch between the Python code sample and the C++ code sample on the same page.

[csaba-luxonis]

Yeah, that would be amazing.

[themarpe]

I think we should do this in other direction:
Remove example numbers from python examples and leave these here as is.

Documentation should mark examples (code samples) with numbers but just as an easier overview

[Luxonis-Brandon]

Oh, yes. Sorry I didn't meant to say that we should have the numbers on these. I agree we should remove the numbers from the Python examples. And just have the documentation designate the order of the code samples.

[csaba-luxonis]

I will remove the example numbers once im done with all

[themarpe]

Also one thing I was thinking, if we allow passing the output file as parameter (as well as the default), to be able to set it to /dev/null / nul for testing case. (Same applies to Python side)

[themarpe]

Throughout examples: use ImgFrame::Type alias instead of Raw*

manip->initialConfig.setFrameType(dai::ImgFrame::Type::BGR888p);

[themarpe]

LGTM apart from:

Style - either same line or with curly braces (in a couple of cases)

if(syncNN) {
    ...
} else {
    ...
}

[SzabolcsGergely]

LGTM

Resolved.