build: read & dynamically resolve `imports` on plugins build (#34509)

build: read & dynamically resolve `imports` on plugins build (#34509)

Our individual js/dist files are now deduplicated properly thus resulting in a size reduction, which varies from ~25% to ~60% depending on the components used. The average savings are 20% uncompressed and ~15% with gzip.

This will mostly benefit cases that more than one component is imported from js/dist. In all other cases it doesn't have any effect.

Co-authored-by: XhmikosR <xhmikosr@gmail.com>