feat(retail): add searchOffset, searchPagination, and searchRequest samples#4285

angelcaamal wants to merge 4 commits intoGoogleCloudPlatform:mainGoogleCloudPlatform/nodejs-docs-samples:mainfrom

angelcaamal:feat-retail-search-samplesangelcaamal/nodejs-docs-samples:feat-retail-search-samplesCopy head branch name to clipboard