chore: Removes Apps and Demos

[krpeacock]

To focus the scope of agent-js, we are moving the identity provider into its own repo, which removes the need for IdentityProvider, Bootstrap, and our demos

[hansl]

I'll block this for a week or two while we deprecate bootstrap, just in case there are issues where we need to republish it.

Also workers depend on those two apps.

[hansl]

LGTM just need to make sure we don't shoot ourselves in the foot. We still have two features incoming for the worker and bootstrap is still used as a fallback for ic0.app.

[krpeacock]

Agreed, there is no urgency here

[krpeacock]

Okay, I think that we're ready to move forward, if the code looks good.

Changes here are:

• removes apps, workers, and demos (they have been relocated)
• incorporates changes to replace lerna with npm workspaces and enable tests to be run directly by jest

[hansl]

There shouldn't be a test script here.

[krpeacock]

Agreed, and I've removed "jest". However, I'll leave a blank script in case anyone wants to run tests using npm run test --workspaces.

I'll also open up an issue on the npm github about skipping empty scripts. There's no reason we should have to include blank scripts in workspaces

[krpeacock]

npm/cli#3043

[hansl]

LGTM. Good cleanup. Love it!