feat: add AI Config data model, defensive parsing & Mustache interpol… #451

Job	Run time
test-contract-tests	4m 33s
test-platforms-and-versions (ubuntu-latest, 11)	3m 48s
test-packaging	5m 8s
test-platforms-and-versions (ubuntu-latest, 19)	3m 36s
test-platforms-and-versions (ubuntu-latest, 17)	3m 43s
test-platforms-and-versions (ubuntu-latest, 8)	3m 47s
	24m 35s

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