Add telemetry data for import and copy operations

[jportner]

Starting in 7.10, when copying or importing saved objects, users have two options:

"Create new objects with random IDs" is a new option. Starting in 7.11, this will be selected by default. The old import and copy behavior detects conflicts and requires users to skip or overwrite objects.

Since users cannot currently share saved objects between spaces, we believe that some users may be utilizing the old copy behavior to effectively implement "pseudo sharing". We also believe that some users may be utilizing the old import behavior to effectively implement "pseudo snapshots", and/or to automate some types of integrations with Kibana (such as standing up a new instance with a standard set of data with specific object IDs).

We would like to add telemetry data in 7.11 to see how many users intentionally utilize the old import and copy behavior.

Related: #82324

[jportner]

Note: As of a recent discussion, we also determined that we want to collect telemetry data on saved objects exports, so we can determine if people are relying on "whole space" exports or not. I'll include this in the linked PR, since it's not much additional work on top of the Import telemetry that I'm already adding.