Add wildcardName field to targetWorkspaces

[jrhouston]

Description

This PR adds a wildcardName field to the autoscaling.targetWorkspaces field of AgentPool, allowing a wildcard search of workspaces as an alternative to specifying each workspace explicitly. This PR also makes the targetWorkspace field optional, defaulting to using all the agents linked to an AgentPool for targeting.

Closes #269

Usage Example

Release Note

Release note for CHANGELOG:

Add `wildcardName` to AgentPool autoscaling configuration

References

Community Note

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