Use `lerna` to manage your packages, `./scripts/install-packages.ts` not good.

[jeasonstudio]

install-packages.ts sometimes error:

INFO  Successfully grabbed "requirefs" dependencies!
INFO  Successfully grabbed "logger" dependencies!
ERROR Failed to install "browser" dependencies {"error":{"killed":false,"code":1,"signal":null,"cmd":"yarn --network-concurrency 1"},"stdout":"[1/4] Resolving packages...\n[2/4] Fetching packages...\ninfo Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.\n","stderr":"warning package.json: No license field\nwarning ../../package.json: No license field\nwarning @coder/app: No license field\nerror https://registry.yarnpkg.com/@material/form-field/-/form-field-0.44.0.tgz: Extracting tar content of undefined failed, the file appears to be corrupt: \"ENOENT: no such file or directory, stat '/Users/jeason/Library/Caches/Yarn/v4/npm-@material-form-field-0.44.0-b7518e885c0e953a2a5fe0140af927c30e066f4e/node_modules/@material/form-field/dist/mdc.formField.js'\"\n"}
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
ERROR: "packages:install" exited with 1.
error Command failed with exit code 1.

lerna should be better. https://lernajs.io/

[kylecarbs]

This is somewhat a duplicate. We'll be using yarn workspaces instead.

#100