Standardize license headers and fix ESLint config#2430

rfontanarosa merged 14 commits intomastergoogle/ground-platform:masterfrom

rfontanarosa/1833/code-health-add-lint-check-for-copyright-headersgoogle/ground-platform:rfontanarosa/1833/code-health-add-lint-check-for-copyright-headersCopy head branch name to clipboard