Update DeviceSpec to work with XCC

[thisac]

Context: As part of the migration to the XCC API, the DeviceSpec class needs to be updated.

Description of the Change:

• The connection object is removed from the DeviceSpec class, so that it only contains the specification with which is was initialized. If the spec needs to be refreshed a new DeviceSpec object needs to be created.
• The target is now retrieved from the device specification rather than passed separately to the __init__() method. This avoids any ambiguities.

Benefits:

• The DeviceSpec class works with XCC.
• The DeviceSpec class only encapsulates the device specification (providing some helper methods), and does not handle any connections.

Possible Drawbacks:

• The target is now taken from the device specification rather than explicitly passed. Shouldn't cause any issues, but would change the primary target if they had differed.

Related GitHub Issues: None

[codecov[bot]]

Codecov Report

:exclamation: No coverage uploaded for pull request base (integrate-xanadu-cloud-client@188123b). Click here to learn what that means. The diff coverage is n/a.

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