Make create_issue_link work with issue_link-objects

fixes pycontribs#1604

The program was tested solely for our own use cases, which might differ from yours.
___
Jannik Meinecke <jannik.meinecke@mercedes-benz.com> on behalf of MBition GmbH.
https://github.com/mercedes-benz/foss/blob/master/PROVIDER_INFORMATION.md

Licensed under [BSD-2-Clause license](https://github.com/pycontribs/jira/blob/main/LICENSE)</sub>

jira/client.py

@@ -117,6 +117,8 @@ def wrapper(*args: Any, **kwargs: Any) -> Any:
         for arg in args:
             if isinstance(arg, (Issue, Project)):
                 arg_list.append(arg.key)
+            elif isinstance(arg, IssueLinkType):
+                arg_list.append(arg.name)
             else:
                 arg_list.append(arg)
         result = func(*arg_list, **kwargs)

tests/resources/test_issue_link.py

@@ -18,6 +18,13 @@ def test_create_issue_link(self):
             self.test_manager.project_b_issue2,
         )
 
+    def test_create_issue_link_with_issue_link_obj(self):
+        self.test_manager.jira_admin.create_issue_link(
+            self.link_types[0],
+            self.test_manager.project_b_issue1,
+            self.test_manager.project_b_issue2,
+        )
+
     def test_create_issue_link_with_issue_obj(self):
         inwardissue = self.test_manager.jira_admin.issue(
             self.test_manager.project_b_issue1