feat(api): manage power state timeout

[mjdivankoller]

PR Checklist

• [x ] Unit Tests have been added for new changes
• API tests have been updated if applicable
• [x ] All commented code has been removed
• [x ] If you've added a dependency, you've ensured license is compatible with Apache 2.0 and clearly outlined the added dependency.

What are you changing?

1. It incorporates helper functions and parameters to manage timeouts with async functions
2. It implements a timeout for getPowerState, defining 10000 milliseconds (or 10 seconds) as the default
3. A 404 HTTP response is given when a timeout is triggered.

Anything the reviewer should know when reviewing this PR?

1. Logs associated with the expected response: test_getPowerState_ok_log.txt
   

2. Logs associated with the timeout after unplugging the cord: test_getPowerState_timeout_log.txt
   

3. Logs associated with the expected response after plugging again the cord: test_getPowerState_plugaftertimeout_log.txt
   

You can define a different value for the default timeout, modifying the "timeout_ms_default" parameter in .mpsrc.

If the there are associated PRs in other repositories, please link them here (i.e. device-management-toolkit/repo#365 )

None