[WFCORE-5595][WFCORE-5596][WFLY-15350] Upgrading to JBoss Modules 2.0.0.Final and JAXP refactoring from WFCORE to WF

[ropalka]

This pull request upgrades JBoss Modules to 2.0.0.Final version (eliminates JAXP hack that was there for years) and moves
Woodstox, Xerces & Xalan dependencies from WildFly Core to WildFly.

https://issues.redhat.com/browse/WFLY-15350
https://issues.redhat.com/browse/WFCORE-5595
https://issues.redhat.com/browse/WFCORE-5596

This pull request is following up on:
wildfly/wildfly#14768
wildfly/wildfly#14711

[github-actions]

Dependency Tree Analyzer Output:

Removed Dependencies:

• com.fasterxml.woodstox:woodstox-core:jar:6.0.3:compile
• org.codehaus.woodstox:stax2-api:jar:4.2.1:compile
• xerces:xercesImpl:jar:2.12.0.SP03:compile

Major Version Changes:

• org.jboss.modules:jboss-modules:jar:1.12.0.Final:compile -> 2.0.0.Final

CC @wildfly/prod

[wildfly-ci]

Core - Full Integration Build 10962 outcome was FAILURE using a merge of 2aa6d05
Summary: Tests failed: 1 (1 new), passed: 4072, ignored: 44 Build time: 01:36:57

Failed tests

org.jboss.as.test.layers.LayersTestCase.testServlet: java.lang.Exception: Some unreferenced modules are un-expected [org.apache.xerces, org.codehaus.woodstox]
	at org.jboss.as.test.layers.LayersTest.test(LayersTest.java:109)
	at org.jboss.as.test.layers.LayersTestCase.testServlet(LayersTestCase.java:142)

[jmesnil]

@ropalka thanks!