Validate that include and exclude parameters are valid regular expression

[benoit74]

It happens every now and then that people try to use invalid regular expression.

While this is catched by the crawler at startup, this is a bit late, it would be way better if this is catched by the zimit frontend to provide very early feedback.

Obviously we might have some edge cases with complex regular expression which are valid in JS but not in Python, but for now the mistake most (all?) people do it that they use * as a regular expression instead of .*.