[Task] <HertzBeat's enhanced features for enterprise-level, multi-collection point support for monitoring items>

### Description

HertzBeat does a very good job in dialing and testing, but to support large-scale scenarios, for example, if you want a global dialing and testing service, you need to establish multiple monitoring items. Therefore, we need to design multiple monitoring items to support monitoring tasks to attract more medium and large enterprise users.

### Task List

_No response_

The issue provides no files, tests, or entry points to inspect, and its task list has no details. Start by clarifying the requirements for multiple monitoring items and collection points, then map those requirements to the monitoring architecture. Done should include a defined enterprise-scale design and an agreed implementation scope.

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