feat: support additional parameter for optional date timezone

[Scrib3r]

Description

The current version of the library always puts the timezone symbol Z at every end of date despite that not all soap services support this date format.

I've extended the options parameter for passing the optional date.timezone parameter to XmlHandler and nested functions for using the optional timezone symbol.

The next code is an example of disabling timezones in the date's string:

const handler = new XMLHandler({}, {
  date: {
    timezone: {
      enabled: false,   
  },
});

By default enabled value is true for avoiding breaking changes for the existing API.

Related issues

• connect to Date format without Z #289

Checklist

• New tests added or existing tests modified to cover all changes
• Code conforms with the style
  guide

[coveralls]

Pull Request Test Coverage Report for Build 4313867057

• 18 of 19 (94.74%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.03%) to 84.144%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/parser/xmlHandler.js	18	19	94.74%

Totals
Change from base Build 4278808431:	0.03%
Covered Lines:	2875
Relevant Lines:	3239

---

💛 - Coveralls

[Scrib3r]

@achrinza
I don't know how but after the request review, @raymondfeng was removed from reviewers.

[dhmlau]

LGTM

[dhmlau]

@Scrib3r, thanks for the PR. Your PR LGTM. I've added @raymondfeng as reviewer per your request.

[dhmlau]

@Scrib3r, thanks again for your contribution. Your PR has been merged! 🎉