[Development] proposed clang-format improvements for lambda functions

[Philippe]

> i'd like to propose the following improvements to the clang-format:
> 
> AllowShortLambdasOnASingleLine: None

I tried that for a few months (for the same reasons as yours).
Then I reverted.

In my experience, it makes the code harder to read more often than
necessary.

Now, when I want to clearly set a breakpoint in a lambda, I just add an
empty comment on the line above, and that’s enough.

Philippe