refactor(audience): catalogues, identity helpers, sample-app strings, and test infrastructure (SDK-277)#726

ImmutableJeffrey wants to merge 9 commits into

chore/sdk-272-pr-1-sdk-runtime-constantsimmutable/unity-immutable-sdk:chore/sdk-272-pr-1-sdk-runtime-constantsfrom

chore/sdk-272-pr-2-catalogues-and-test-infraimmutable/unity-immutable-sdk:chore/sdk-272-pr-2-catalogues-and-test-infraCopy head branch name to clipboard