Development assistance plugin for initx.

Synchronize cnpm initx, @initx-plugin/core, @initx-plugin/utils packages:

npx initx dev sync

When run inside the initx monorepo, link local packages/core and packages/utils into the initx plugin directory (PLUGIN_DIR from @initx-plugin/core):

npx initx dev link

Requires @initx/monorepo at the repo root and matching package names under packages/core and packages/utils.

Restore @initx-plugin/core and @initx-plugin/utils from the npm registry in the initx plugin directory. Can be run from any directory:

npx initx dev unlink