feat(ferry): allow sharing of clients between Isolates

[odlund]

• Makes the commandSendPort visible outside of the package
• Create a new IsolateClient.attach(SendPort) function to attach to an existing client from a separate Isolate

[netlify]

✅ Deploy Preview for verdant-brigadeiros-5171fa canceled.

Name	Link
🔨 Latest commit	d65a699
🔍 Latest deploy log	https://app.netlify.com/sites/verdant-brigadeiros-5171fa/deploys/660f3af5c332c5000871f6f2

[knaeckeKami]

Thanks! It seems the pipeline failures are due to new upgrades of the underlying SDKs and unrelated to the changes, no action item needed from your side.