feat: Twitter integration

[garance-buricatu]

• I have looked for existing issues (including closed) about this

Feature Request

Add a Twitter integration crate to easily create Twitter bots from Rig Agents.

Motivation

One of the main use cases of LLMs is to create special purpose chatbots. Although Rig currently provides the building blocks necessary to create chatbots with custom sources of context and tools, Rig is limited in it's support for the deployment of these chatbots. Twitter is a popular platform used by many communities which supports bots as first class citizens. It is therefore a natural target for deploying Rig agents.

Proposal

Create a new companion crate rig-twitter which provides a generic discord bot struct TwitterBot<T: Chat> (name not final). The struct should work for any type that implements the Chat trait defined in rig-core, thus providing an out-of-the-box way for developers to deploy their custom Rig Agents as Twitter bots.

Important note: cannot use twitter webhooks because you need Enterprise plan which costs $52,000 / month!
See plans. See more details.
See api v2.

With free plan:

• 500 writes/month
• 100 reads/month

With basic plan ($175/month):

• 50,000 writes/month
• 15,000 reads/month

So we would need to create a infinite read loop that checks for unread posts --> ingest into our system --> call Rig agent --> post response, ie. not serverless