Support transformation schema for XML

[RVRhub]

The PR introduces XML transformer.
An example of usage

Faker faker = new Faker();
System.out.println(
    new XmlTransformer.XmlTransformerBuilder<Name>().pretty(true).build()
        .generate(faker.<Name>collection().suppliers(faker::name).maxLen(1).build(),
                Schema.of(field("root",() -> Arrays.asList(field("firstName", Name::firstName), field("username", Name::username))))));

Result:

<root>
    <firstName>Danial</firstName>
    <username>arden.little</username>
</root>

[snuyanzin]

hm...
that's not good it should generate
like

name: Katharyn
lastname: Predovic
phones:
  worknumbers: 
     - (715) 228-3360 x9556
     - (936) 907-6813 x7053
  cellphones: 
     - 410.609.5559
     - 1-720-415-7634
     - 786-631-7588

[RVRhub]

yes, you are right.

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 92.13483% with 7 lines in your changes missing coverage. Please review.

Project coverage is 92.61%. Comparing base (2015bcb) to head (904850b).
Report is 1174 commits behind head on main.

Files with missing lines	Patch %	Lines
.../net/datafaker/transformations/XmlTransformer.java	92.13%	4 Missing and 3 partials ⚠️

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Additional details and impacted files

@@             Coverage Diff              @@
##               main     #549      +/-   ##
============================================
- Coverage     92.66%   92.61%   -0.05%     
- Complexity     2374     2405      +31     
============================================
  Files           248      249       +1     
  Lines          4951     5040      +89     
  Branches        530      543      +13     
============================================
+ Hits           4588     4668      +80     
- Misses          241      246       +5     
- Partials        122      126       +4     

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[bodiam]

@snuyanzin can this be merged?

[snuyanzin]

This could a bit simpler like

Suggested change

	Field<IN, ?> content = Arrays.stream(attrs)
	.filter(inField -> !isAttribute(inField.getName())).findFirst()
	.orElse(null);
	applyTag(input, sb, content, tag);
	} else {
	applyTag(input, sb, xmlNode, tag);
	}
	xmlNode = Arrays.stream(attrs)
	.filter(inField -> !isAttribute(inField.getName())).findFirst()
	.orElse(null);
	}
	applyTag(input, sb, xmlNode, tag);

[snuyanzin]

in general lgtm
thanks for your contribution @RVRhub
there is just a nit comment
could you fix it please and then we will merge it?

[bodiam]

Thanks for this change! Time to release I think!!