Update .gitignore to include vcpkg.json and remove CMakeLists.txt at root level

Author: euclid-skyline

.gitignore

@@ -14,6 +14,7 @@ convert.py
 **/[B,b]uild/*
 
 attachments/build/**
+attachments/vcpkg.json
 attachments/android/.gradle/**
 attachments/android/.idea
 attachments/android/.gradle/**