Implement third party E2, E5, E6 violations

[dendmicap]

#5
#8
#31

DO NOT MERGE

[hohwille]

@dendmicap thanks for your PR. Looks good to demonstrate the rule violations. 👍

[hohwille]

IMHO the way ArchUnit and the rules report the violations looks perfectly clear to me.
The only slight nice to have improvement would be the ... because Use the ... part that does not make sense from Engish grammar point of view. Could be addressed with #19

Error:  Failures: 
Error:    Architecture Violation [Priority: MEDIUM] - Rule 'no classes should depend on classes that have fully qualified name 'javax.persistence.Convert', because Use the javax.persistence.Converter annotation on a custom converter which implements the javax.persistence.AttributeConverter instead of the 'javax.persistance.Convert' annotation' was violated (1 times):
Class <com.devonfw.sample.archunit.general.dataaccess.violations.ThirdPartyDataMappingPersistanceNotOk> is annotated with <javax.persistence.Convert> in (ThirdPartyDataMappingPersistanceNotOk.java:0)
Error:    Architecture Violation [Priority: MEDIUM] - Rule 'no classes should depend on classes that reside in a package 'com.mysema.query..', because Use official QueryDSL (com.querydsl.* e.g. from com.querydsl:querydsl-jpa).' was violated (1 times):
Field <com.devonfw.sample.archunit.general.dataaccess.violations.ThirdPartyMysemaNotOk.jpaQuery> has type <com.mysema.query.jpa.impl.JPAQuery> in (ThirdPartyMysemaNotOk.java:0)
Error:    Architecture Violation [Priority: MEDIUM] - Rule 'no classes should depend on classes that have fully qualified name 'com.google.common.base.Objects', because Use Java standards instead (java.util.Objects).' was violated (1 times):
Constructor <com.devonfw.sample.archunit.general.dataaccess.violations.ThirdPartyObjectNotOk.<init>()> calls method <com.google.common.base.Objects.equal(java.lang.Object, java.lang.Object)> in (ThirdPartyObjectNotOk.java:7)