Added XQuery Tool and refactored tools-service (#220)

Co-authored-by: Adam Bem <adam.bem@zoho.eu>
Reviewed-on: #220
Reviewed-by: Mikolaj Widla <widlam@noreply.example.com>

Samples/xquery/sampleXML.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<l:library xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.release11.com" xmlns:l="http://www.release11.com/library" xmlns:p="http://www.release11.com/person" xmlns:b="http://www.release11.com/book">
+    <l:libraryName>City library</l:libraryName>
+    <l:libraryID>345123</l:libraryID>
+    <l:readerList>
+        <p:person>
+            <p:readerID>7321</p:readerID>
+            <p:name>Adam</p:name>
+            <p:surname>Choke</p:surname>
+        </p:person>
+        <p:person>
+            <p:readerID>5123</p:readerID>
+            <p:name>Lauren</p:name>
+            <p:surname>Wong</p:surname>
+        </p:person>
+    </l:readerList>
+    <l:bookList>
+        <b:book>
+            <b:bookID>6422</b:bookID>
+            <b:title>Harry Potter</b:title>
+            <p:readerID>7542</p:readerID>
+        </b:book>
+        <b:book>
+            <b:bookID>1234</b:bookID>
+            <b:title>Macbeth</b:title>
+            <p:readerID>5123</p:readerID>
+        </b:book>
+        <b:book>
+            <b:bookID>9556</b:bookID>
+            <b:title>Romeo and Juliet</b:title>
+        </b:book>
+    </l:bookList>
+</l:library>

Samples/xquery/xquery.curl

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+url = "localhost/java/xquery"
+#url = "localhost/libxml/xslt"
+data = "@xquery.json"
+request = POST

Samples/xquery/xquery.json

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+{
+    "data": "<people><person><name>John</name><age>67</age></person><person><name>Anna</name><age>69</age></person></people>",
+    "process": "for $x in //person return string($x/name)",
+    "processor": "saxon",
+    "version": "3.1"
+}