Zabbix

A......... [ZBXNEXT-6470,ZBXNEXT-6885] implemented audit logging of mediatype API object; refactored mediatype.create, mediatype.update and mediatype.delete

* commit '771fdb54a7c6f0157659d0aeccbee13a7133fb69': (21 commits)
  A......... [ZBXNEXT-6885] fixed undefined index error when passing a set of empty parameters for media types other than webhooks
  A......... [ZBXNEXT-6885] fixed coding style
  A......... [ZBXNEXT-6885] simplified code
  A......... [ZBXNEXT-6885] added new parameter type API_EXEC_PARAMS
  A......... [ZBXNEXT-6885] added check that parameters of type API_OBJECT and API_OBJECTS should be empty if field rules are empty
  A......... [ZBXNEXT-6885] fixed coding style
  A......... [ZBXNEXT-6885] fixed parameters "event_menu_url" and "event_menu_name" being required when updating mediatype if "show_event_menu" is enabled and the type of mediatype has not been changed
  A......... [ZBXNEXT-6885] fixed code style
  A......... [ZBXNEXT-6885] fixed incorrect validation rules definition
  A......... [ZBXNEXT-6885] added required flag for event_menu_url and event_menu_name fields; simplified code
  A......... [ZBXNEXT-6885] fixed coding style
  A......... [ZBXNEXT-6885] weakened initial validation rules on create and update; added missing validation rules by type
  A......... [ZBXNEXT-6885] improved validation logic
  A......... [ZBXNEXT-6885] fixed table name
  A......... [ZBXNEXT-6885] improved coding style
  A......... [ZBXNEXT-6885] improved coding style
  A......... [ZBXNEXT-6885] made methods static
  A......... [ZBXNEXT-6885] improved coding style
  A......... [ZBXNEXT-6885] moved event menu validation to API validation rules
  .D........ [ZBXNEXT-6885] added changelog file
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