Common/Static interface for resolving our helper `machine_type(s)` and `region(s)`

[dacbd]

Context: #718 (comment)
Older relate discussions: #344

Currently, string maps are allocated for each call of their respective cloud provider to determine the correct machine_type / region
While previously the performance optimization wasn't needed this could be justified with the addition of the leo server, as well as a consist way the keep cml/tpi helper alias in sync for runner and task