[multi-entry] Watch files matched by the glob pattern

[GauBen]

• Rollup Plugin Name: @rollup/plugin-multi-entry
• Rollup Plugin Version: 6.0.1

Feature Use Case

Hi! I'm using @rollup/plugin-multi-entry with a glob of files. When in watch mode (rollup -c -w/vite build --watch), existing files are properly watched but newly created files matching the glob pattern are ignored.

Feature Proposal

In watch mode, if a glob is given and new files are created matching this glob, they should be picked up.

I can take care of the implementation if this feature is accepted.