Add support for setting any default JDBC option and setting default saved configurations

[SanjulaGanepola]

Changes

1. Adds support for setting any default JDBC option (except libraries) instead of just SQL Naming. There is also logic to migrate what users may have previously set in the old Job Naming Default setting. These default connection properties are not specific to any connection and will be used to spin up a job (if a connection has no default saved configuration - this is also a new feature explained further below). This addresses a customer reported issue (during the Code for IBM i Fridays) where you could not change any JDBC options unless you connected at least once (this is now possible).
   
2. Adds support for setting default saved configurations so whenever you connect, it will spin up a job with those configurations. This addresses Default Connection Settings #491
   
   
3. When spinning up a job, it often felt like it wasn't doing anything unless you were looking at the status bar. I also added a progress bar to the view itself so users knows it's spinning up.
   

[github-actions]

👋 A new build is available for this PR based on ef086a0.

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[forstie]

Works like a champ!