BuildResolver.AddParamAndChildren can attempt to add params that haven't been added to the build

[DecSmith42]

An example of this is when using .RequiresParam(nameof(IAzureArtifactStorage.AzureArtifactStorageConnectionString)) on a target without actually setting IAzureArtifactStorage as an interface of the build.

This can cause the BuildResolver to lookup AzureArtifactStorageConnectionString in the paramModels map and run into KeyNotFoundException.

The fix should be something along the lines of:

Print a more useful indication of why the error happens when we encounter it and exit the build (instead of just exiting due to KeyNotFoundException