Add Search for activities

[miquelgall]

Is your feature request related to a problem? Please describe.
Add search for activities API Request

Describe the solution you'd like

The API Search for Activities requests allows to find an activity using the appt_number and it is required when you don't have the option to use the internal activity id

It is required to have this API available as part of this framework

Additional context

https://docs.oracle.com/en/cloud/saas/field-service/cxfsc/op-rest-ofsccore-v1-activities-custom-actions-search-get.html