Protocol cleanups

[arendjr]

Description

Now that the remaining legacy providers are converted, we can also get rid of the legacy types from the protocol.

Also cleans up a few annotations that still used the fp-bindgen v2 syntax.

Fixes FP-2705

Checklist

Please make sure all of these are checked before merging. Please leave items
you think are non-applicable in the list, but use strike-through (~~) to
indicate they don't apply.

• The changes have been tested to be backwards compatible.
• [ ] The OpenAPI schema and generated client have been updated.
• [ ] New models module has been added to API generator script
• [ ] PR for API is ready and reviewed: (please link)
• PR for Studio is ready and reviewed: https://github.com/fiberplane/studio/pull/1431
• PR for CLI is ready and reviewed: Remove support for the legacy protocol fp#221
• [ ] PR for FPD is ready and reviewed: (please link) Heads-up: I am intentionally delaying the rollout of the new providers to FPD, since that will give us extra time to test how Studio works with FPD instances that still have the old providers.
• PR for Providers repo is ready and reviewed: FP-2705: Convert legacy providers providers#20
• The CHANGELOG(s) are updated.

When adding new operation types:

• [ ] PR for fiberplane-ot is ready and reviewed: (please link)

After merging, please merge related PRs ASAP, so others don't get blocked.

[gagbo]

That's fine, we'll have to remember to notify customers that the next version of Studio won't work with their proxies (I'm assuming that if we remove the legacy bindings from TS, Studio won't be able to query old providers even behind a daemon)

[arendjr]

@gagbo I explicitly left support for the legacy proxies in place. Only the providers that are bundled with Studio are all on v2 now.