Zabbix

...G...... [ZBXNEXT-9281] added configurable item timeout support

Merge in ZBX/zabbix from feature/ZBXNEXT-9281-7.0 to release/7.0

* commit 'd7e73d12a9e0c3cba8330c4eeb3a9f26f91284cd':
  .......... [ZBXNEXT-9281] added changelog
  ...G...... [ZBXNEXT-9281] minor lint fix
  ...G...... [ZBXNEXT-9281] fixed error formatting
  ...G...... [ZBXNEXT-9281] restyled comms delay expression
  ...G...... [ZBXNEXT-9281] applied suggestion
  ...G...... [ZBXNEXT-9281] added various fixes
  ...G...... [ZBXNEXT-9281] made broker timeout more generic
  ...G...... [ZBXNEXT-9281] reworked errors in parseItemTimeout, code style fixes
  ...G...... [ZBXNEXT-9281] fixed code style, got rid of else
  ...G...... [ZBXNEXT-9281] added comment for maxItemTimeout
  ...G...... [ZBXNEXT-9281] fixed broker timeout
  ...G...... [ZBXNEXT-9281] added timeout by max timeout in scheduler
  ...G...PS. [ZBXNEXT-9281] added