experimental: setup rblib

[wlawt]

Do not merge (build week hackathon project)

This PR explores the idea of setting up rblib, a custom block builder, which will supersede op-rbuilder, eventually in the future.

Goals of this experiment:

• Setup skeleton of rblib by following the example
• Setup the infra (dockerfiles)
• Be able to sync the ExEx up to tip (using pruned snapshots)

Stretch:

• Understand how to create custom bundle types
• Understand how this fits in with UserOps
• Explore other tx ordering methods

[wlawt]

the tips-builder has been setup to do the following:

1. Receives a UserOp from eth_send_user_operation
2. After it passes validate_user_operations, add it to tips-user-operation topic.
3. The tips-builder listens to tips-user-operation as a consumer.
4. The builder creates a UserOperation bundle and inserts it in the middle of the block

References:

• Shamit/aa bundler gas calculation shamit05/base-op-rbuilder#1
• feat(core): add in-memory mempool for 4337 user operations #108

[wlawt]

┌─────────────┐      ┌────────────┐      ┌─────────┐      ┌─────────┐
│ RPC Client  │─────▶│ Ingress-RPC│─────▶│  Kafka  │─────▶│ Builder │
└─────────────┘      └────────────┘      └─────────┘      └─────────┘
                            │                                    │
                            ▼                                    ▼
                     ┌─────────────┐                    ┌──────────────┐
                     │ Simulation  │                    │ OrderPool    │
                     │ (Validate)  │                    │ (Pipeline)   │
                     └─────────────┘                    └──────────────┘
                                                                │
                                                                ▼
                                                        ┌──────────────┐
                                                        │ Block (50%   │
                                                        │ regular txs) │
                                                        ├──────────────┤
                                                        │ ★ BUNDLER TX │
                                                        │ handleOps()  │
                                                        ├──────────────┤
                                                        │ Block (50%   │
                                                        │ regular txs) │
                                                        └──────────────┘

[James-Li-t]

poggers