Support `CharacterEscapes` using Stax (Woodstox/Aalto) functionality

Currently CharacterEscapes system does not work for XML module, mostly because module has no direct control over output escaping. However, Stax2 extension that Woodstox (and Aalto I think?) implements does have similar functionality, using properties:

• P_TEXT_ESCAPER (for cdata)
• P_ATTR_VALUE_ESCAPER (for attribute values)

so it would be great to use that functionality to support needs for customized escapes, if at all possible. It is hard to say for sure whether that would work, but it should be easy enough to check.

[mvysny]

This is ridiculous, ' and " should have been escaped automatically by default. Workaround is to implement EscapingWriterFactory:

https://stackoverflow.com/questions/56799368/escaping-quotes-using-jackson-dataformat-xml

[cowtowncoder]

Excellent! Thank you for sharing this.