fix(gitignore): ignore temporary build artifacts and coverage profiles - #17720

Unknown scope "gitignore" found in pull request title "fix(gitignore): ignore temporary build artifacts and coverage profiles". Scope must match one of: cpa, claude, codemod, db-\*, db-d1-sqlite, db-mongodb, db-postgres, db-vercel-postgres, db-sqlite, db-d1-sqlite, drizzle, email-\*, email-nodemailer, email-resend, eslint, evals, graphql, kv, kv-redis, live-preview, live-preview-react, live-preview-vue, next, payload-cloud, plugin-cloud, plugin-cloud-storage, plugin-ecommerce, plugin-form-builder, plugin-import-export, plugin-mcp, plugin-multi-tenant, plugin-nested-docs, plugin-redirects, plugin-search, plugin-sentry, plugin-seo, plugin-stripe, richtext-\*, richtext-lexical, sdk, skills, storage-\*, storage-azure, storage-gcs, storage-r2, storage-vercel-blob, storage-s3, tanstack-start, translations, ui, templates, examples(\/(\w|-)+)?, deps.