feat:new attribute new-param-mobiles_sharing_data in FiberContractsToPack

Origin: https://trello.com/c/FLLFA4Iv

odoo_somconnexio_python_client/resources/fiber_contracts.py

@@ -8,7 +8,7 @@ class FiberContractsToPack:
     _url_path = "/contract/available-fibers-to-link-with-mobile"
 
     @classmethod
-    def search_by_partner_ref(cls, partner_ref, mobiles_sharing_data):
+    def search_by_partner_ref(cls, partner_ref, mobiles_sharing_data=False):
         """
         Search available fiber contracts to pack by their partner reference.
         mobiles_sharing_data if true return fibers with offer mobile associated