docs: add contributor docs (#41)

* docs: add contributor docs

* docs: nit

* docs: move project layout to docs folder

* chore: slash the slashes

* docs: re-add ci badge (whoops)

* docs: index

README.md

@@ -4,24 +4,6 @@
 
 ![Github Actions](https://github.com/foundry-rs/reth/workflows/ci/badge.svg)
 
-## Directory Structure
+## Docs
 
-This repository contains several Rust crates that implement the different building blocks of an Ethereum node. The high-level structure of the repository is as follows:
-
-- `crates/`
-    - [`db/`](crates/db): Strongly typed database bindings to [LibMDBX](https://github.com/vorot93/libmdbx-rs/) containing read/write access to Ethereum state and historical data (transactions, blocks etc.)
-    - [`executor/`](crates/executor): Blazing-fast instrumented EVM using [`revm`](https://github.com/bluealloy/revm/). Used during consensus, syncing & during transaction simulation / gas estimation.
-    - [`interfaces/`](crates/interfaces): Traits containing common abstractions across the components used in the system. For ease of unit testing, each crate importing the interface is recommended to create mock/in-memory implementations of each trait.
-    - `net/`
-        - [`p2p`](crates/net/p2p): Implements the Ethereum P2P protocol.
-        - [`rpc-api`](crates/net/rpc-api): Traits 
-            - Supported transports: HTTP, WS, IPC
-            - Supported namespaces: `eth_`, `engine_`, `debug_`
-        - [`rpc`](crates/net/rpc): Implementation of all ETH JSON RPC traits defined in `rpc-api`.
-        - [`rpc-types`](crates/net/rpc-types): Types relevant for the RPC endpoints above, grouped by namespace
-    - [`primitives/`](crates/stages): Commonly used types in Reth.
-    - [`stages/`](crates/stages): The staged sync pipeline, including implementations of each stage.
-    - [`transaction-pool/`](crates/transaction-pool): An in-memory pending transactions pool.
-- [`crate-template`](crate-template): Template crate to use when instantiating new crates under `crates/`.
-- [`bin/`](bin): Where all binaries are stored.
-- [`examples/`](examples): Example usage of the reth stack as a library.
+Contributor docs can be found [here](./docs).