replace fs by fs-extra to prevent EMFILE error

package.json

scripts/generate-code-contributors.ts

scripts/i18n/create-custom-files.ts

scripts/i18n/xliff2json.ts

scripts/parse-log.ts

server/controllers/static.ts

server/helpers/captions-utils.ts

server/helpers/core-utils.ts

server/helpers/logger.ts

server/helpers/requests.ts

server/helpers/webtorrent.ts

server/initializers/migrations/0065-video-file-size.ts

server/lib/cache/abstract-video-static-file-cache.ts

server/lib/emailer.ts

server/lib/schedulers/youtube-dl-update-scheduler.ts

server/tests/utils/users/accounts.ts

server/tests/utils/videos/videos.ts

server/tools/upload.ts