feat(vite-plugin-blocklet): [release-minor] add embed build plugin

[LancelotLewis]

Relates Issue

relates #333

Main changes

1. Add embed build plugin
2. Improved embed dev mode dx

Screenshots

Check list

• Project create by create-blocklet can work with npm run dev
• Project create by create-blocklet can work with npm run deploy
• Project create by create-blocklet can work with npm run upload
• If a new version need to be publish, make sure you have run npm run bump-version command