RegexMatcher modifications to accept the a list of rules as Param

[showy]

• RegexMatcher now accepts rulesList and rulesFile params

[saif-ellafi]

Logic looks good! please improve things on the resolveRules and few naming items:

1. resolveRules():
   If the user provides empty string, let it fail, I would
   a. remove the empty checkings
   b. use get(rulesFile), this returns an Option and will be defined if user provided a value, if not defined, call getDefault(rulesFile) which will return the default value. This is all Params API. I do this in other annotators:
   get(param).orElse(getDefault(param)).getOrElse(...) and this can replace the function.

2. rulesFile -> rulesPath would be more consistent with what other annotators call the path file related params.