Download script for Vim extension in VSCode

I'm using the Vim extension in VSCode. In C++, I can indent blocks of code with the >i{ and >a{ commands. This can't be done in Python, as it uses indentation instead of brackets to delimite blocks of code. However, I found that it can be achieved by downloading this script for Vim. The site says it has to be unpacked "in the vim runtime directory". Where is this directory in the case of the Vim extension?