refactor: create @docusaurus/bundler and @docusaurus/babel packages
#6534
| Job | Run time |
|---|---|
| 4m 20s | |
| 4m 23s | |
| 3m 36s | |
| 3m 34s | |
| 3m 42s | |
| 3m 40s | |
| 4m 9s | |
| 4m 3s | |
| 3m 57s | |
| 35m 24s |