enhancement/implement_tooltips_for_xpath3 (#242)

Co-authored-by: widlam <mikolaj.widla@gmail.com>
Reviewed-on: #242

Frontend/src/assets/tooltips/xpath/xpathdiffs.json

@@ -0,0 +1,46 @@
+{
+    "universalInfo":
+    [
+        {
+            "category":"What is XPath",
+            "description":"XPath is a query language used for selecting nodes from XML and processing them. It may perform operations on strings, numbers and boolean values."
+        }
+    ],
+    "VersionDiffs":
+    [
+        {
+            "version":"2.0",
+            "diffs":
+            [
+                "Added support for all XML simple types",
+                "Many new functions (tripled instruction count)",
+                "All expressions evaluate to sequence",
+                "Introduces conditional expressions and for-loops"
+            ]
+        },
+        {
+            "version":"3.0",
+            "diffs":
+            [
+                "Dynamic function calls (function may be called without being referenced by name (find function in collection and call)",
+                "Inline functions",
+                "Namespace literals - Namespace may be embedded into function name",
+                "Support for union types - collections containing elements of different types",
+                "Mapping operator - '!' performs evaluation for each element in sequence and concatenates results",
+                "Introduced maps"
+            ]
+        },
+        {
+            "version":"3.1",
+            "diffs":
+            [
+                "New operator for function chaining '=>' ",
+                "Introduced maps that store data in pair 'key:value' - 'map{ key : value, key : value }'",
+                "Introduced arrays - they differ from sequences in that they can be nested 'array{1, 5, 7, (10 to 20)}'"
+            ]
+        }
+
+    ]
+
+
+}