VCS Account Request: kocsismate

Hi Everyone,

Nikita suggested me that I could ask for a VCS account (https://github.com/php/php-src/pull/4881#issuecomment-550278007), as I've been contributing to PHP lately by fixing smaller issues and participating in the "Stubs" initiative.

With a VCS account, I plan to add the missing stubs faster, and continue working on other smaller stuffs.

Thanks,
Máté Kocsis