Upload built extension zips to release-please releases

[uncenter]

Is there an existing issue for this?

• [X] I have searched the existing issues.

Are you on the latest version of the extension?

• [X] I am on the latest version of the extension.

What browser are you using?

N/A

What issue are you experiencing?

Upload built extension zips to release-please releases for manual installation.

[uncenter]

Nvm... we already have this lmao.