chore: generate stubsdir for all beta clients (#6687)

Changes:

feat(binaryauthorization): start generating proto message types

feat(oslogin): start generating proto message types

feat(retail): start generating proto message types

feat(dataform): start generating proto message types

feat(datalabeling): start generating proto message types

feat(documentai): start generating proto message types

feat(memcache): start generating proto message types

feat(metastore): start generating proto message types

feat(notebooks): start generating proto message types

feat(phishingprotection): start generating proto message types

feat(recommendationengine): start generating proto message types

feat(securitycenter): start generating proto message types

feat(servicedirectory): start generating proto message types

feat(webrisk): start generating proto message types

feat(dataqna): start generating proto message types

feat(functions): start generating proto message types

feat(lifesciences): start generating proto message types

feat(mediatranslation): start generating proto message types

feat(osconfig): start generating proto message types

feat(security): start generating proto message types

feat(vision): start generating proto message types

feat(artifactregistry): start generating proto message types

feat(automl): start generating proto message types

feat(gkeconnect): start generating proto message types

feat(networkconnectivity): start generating proto message types

feat(redis): start generating proto message types

feat(talent): start generating proto message types

feat(videointelligence): start generating proto message types

feat(assuredworkloads): start generating proto message types

feat(billing): start generating proto message types

feat(dialogflow): start generating proto message types

feat(recaptchaenterprise): start generating proto message types

feat(recommender): start generating proto message types

feat(scheduler): start generating proto message types

feat(cloudtasks): start generating proto message types

feat(workflows): start generating proto message types

feat(analytics): start generating proto message types

feat(area120): start generating proto message types

feat(datacatalog): start generating proto message types

feat(datastream): start generating proto message types

feat(domains): start generating proto message types

feat(gaming): start generating proto message types

feat(gkehub): start generating proto message types

feat(networksecurity): start generating proto message types

feat(speech): start generating proto message types

feat(dataflow): start generating proto message types

feat(language): start generating proto message types

feat(privatecatalog): start generating proto message types

feat(secretmanager): start generating proto message types