[Feature in SDK]: add support of events onCrmContact

[mesilov]

Description

add support of events onCrmContact

Code	Description
onCrmContactAdd	When a contact is created manually or via the crm.contact.add method
onCrmContactUpdate	When a contact is updated manually or via the crm.contact.update method
onCrmContactDelete	When a contact is deleted manually or via the crm.contact.delete method

https://apidocs.bitrix24.com/api-reference/crm/contacts/events/index.html

Example

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