Support transition timeout on all run targets

[WilliamRoebuck]

What

Currently, the config schema allows users to configure a transition timeout for each run target. This value is not used internally and only the "Off" transition during shutdown has a (hardcoded) time limit.
As part of this, we should update the RunTarget structure to hold the loaded run target config, rather than discarding it after dependency graph construction.

Acceptance Criteria (DoD)

• Transition timeout is accessible from RunTarget object
• If a transition timeout is configured for a run target and the time limit is exceeded, the transition fails
• A test should be added to verify this
• The max termination timeout introduced in Add tests which are verifying comp_req__launch_man__launcher_exit_shutdown #450 should be replaced with the off target's timeout

How

No response

[TimoSteuerwaldETAS]

The max termination timeout calculation has been reverted and replaced by the transition timeout of the Off target in the mentioned PR above. However this doesn't mean that the transition timeout is already fully supported.