vehicles - update autothrottle to use future CBA pid component

[TheCandianVendingMachine]

When merged this pull request will:

• Use CBA pid
• update autothrottle to be better in terms of controller

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[PabstMirror]

Unrelated to this PR directly
but at some point they must have added autothrottle to the base game?

even with no mods, creating a dialog will make the plane level off before hitting terrain and roughly follow same speed
the only downside is it kicks out of ace's autothrottle because throttle pos mismatch