Add integrations map to Job proto and model#2453

rfontanarosa wants to merge 9 commits intomastergoogle/ground-platform:masterfrom

rfontanarosa/1537/whisp-integration-allow-survey-organizers-to-enabledisable-integrations-per-jobgoogle/ground-platform:rfontanarosa/1537/whisp-integration-allow-survey-organizers-to-enabledisable-integrations-per-jobCopy head branch name to clipboard