**What**
- remove medusa-core-utils
- dispatch the utils where they belongs
- update usage
**NOTE**
I have been wondering if the graceful class should go into the utils package or medusa package, I ve put it in the medusa package as it seems to be the best place I can see for now and is tight to the server as well. Also, I wanted to avoid the utils package to depends on http and net dependencies, happy to change that if you feel like it
- Remove `v2` option and install V2 starter branch by default.
- Use new `exec` command to seed data
- Install v2 branch of next.js starter if the option is provided.
- Change the opened browser to `localhost:9000/app`.
- Added a bunch of todos for onboarding flows once we have that
* fix(medusa-oas-cli, oas-github-ci): updated paths to docs directories following monorepo reorganization
* revert change to workspaces
* change oas in workspaces
* revert change in test script
