## WarnOnCreate hint input type and memory conditions

WarnOnCreate hint now support input type condition (with a DataTypeDomain syntax)
and relative memory conditions. See ProxyHints.md for the documentation.

WarnOnCreate hint has been added to many filters, which should help
users avoid out of memory or swapping issues.

![Illustration of a warning on creation of a Clip filter](warn-on-create-conditions.png)
