Change the license to MIT plz

[1vanK]

subj

[rsashka]

At the beginning of the project, I discussed the possibility of working on it together with the developer of a paid proprietary static analyzer, but we couldn't agree on working together. And so that they don't take everything ready, so for now we need to use a license based on LGPL.

And after ported of the plugin for GCC, I plan to change the license to a permissive one (Apache 2 or MIT).