Add a simple template search method

[uplateandonline]

Add a simple template search method

Request Type

Feature Request

Work Environment

Question	Answer
OS version (server)	Ubuntu
OS version (client)	Ubuntu
TheHive4py version / git hash	be80a7d

Problem Description

It would be nice if there was the ability search for templates, as in:

+    def find_case_templates(self, **attributes):
+        """
+            :return: list of case templates
+            :rtype: json
+        """
+        return self.__find_rows("/api/case/template/_search", **attributes)
+

Steps to Reproduce

N/A

Possible Solutions

See above

Complementary information

I'll raise a PR unless there are any issues ..