#6 breakdown pt2 - add contracts module (#10)

* add new repo structure

* add codegen (contracts, subgraph), order signing and order book API interface

* refactor repo configs/readme

* add codegen module

* add common module

* remove stale subgraphs/core modules

* add contracts module

* add order_book module

* add order posting example

* remove web3_codegen from Makefile

* remove order signing TODO from readme

* fix PR reviews

* remove duplicated ETH constant address

* fix lint

* remove eth but address constant

* add types of domain and add order hashing tests

* fix types

* fix type in order_posting_e2e test

* add generated files to lib

---------

Co-authored-by: José Ribeiro <me@joseribeiro.dev>

README.md

@@ -87,20 +87,104 @@ data = client.get_data(response)
 pprint(data)
 ```
 
-### Signing an Order (TODO)
+Or you can leverage `SubgraphClient` to use a custom query and get the results as JSON:
 
 ```python
-from cow_py.order_signing import sign_order
+from pprint import pprint
+from cow_py.subgraph.client import SubgraphClient
+
+url = build_subgraph_url() # Default network is Chain.MAINNET and env SubgraphEnvironment.PRODUCTION
+client = SubgraphClient(url=url)
+
+response = await client.execute(query="""
+            query LastDaysVolume($days: Int!) {
+              dailyTotals(orderBy: timestamp, orderDirection: desc, first: $days) {
+                timestamp
+                volumeUsd
+              }
+            }
+            """, variables=dict(days=2)
+            )
+
+data = client.get_data(response)
+pprint(data)
+```
+
+Or you can leverage `SubgraphClient` to use a custom query and get the results as JSON:
+
+```python
+from pprint import pprint
+from cow_py.subgraph.client import SubgraphClient
+
+url = build_subgraph_url() # Default network is Chain.MAINNET and env SubgraphEnvironment.PRODUCTION
+client = SubgraphClient(url=url)
+
+response = await client.execute(query="""
+            query LastDaysVolume($days: Int!) {
+              dailyTotals(orderBy: timestamp, orderDirection: desc, first: $days) {
+                timestamp
+                volumeUsd
+              }
+            }
+            """, variables=dict(days=2)
+            )
+
+data = client.get_data(response)
+pprint(data)
+```
+
+## 🐄 Development
 
-# Example order details
-order_details = {
-    "sell_token": "0x...",
-    "buy_token": "0x...",
-    "sell_amount": 100000,
-}
+### 🐄 Tests
+
+Run tests to ensure everything's working:
+
+```bash
+make test # or poetry run pytest
+```
+
+### 🐄 Formatting/Linting
 
-signed_order = sign_order(order_details, private_key="your_private_key")
-print(signed_order)
+Run the formatter and linter:
+
+```bash
+make format # or ruff check . --fix
+make lint # or ruff format
+```
+
+### 🐄 Codegen
+
+Generate the SDK from the CoW Protocol smart contracts, Subgraph, and Orderbook API:
+
+```bash
+make codegen
+```
+
+## 🐄 Development
+
+### 🐄 Tests
+
+Run tests to ensure everything's working:
+
+```bash
+make test # or poetry run pytest
+```
+
+### 🐄 Formatting/Linting
+
+Run the formatter and linter:
+
+```bash
+make format # or ruff check . --fix
+make lint # or ruff format
+```
+
+### 🐄 Codegen
+
+Generate the SDK from the CoW Protocol smart contracts, Subgraph, and Orderbook API:
+
+```bash
+make codegen
 ```
 
 ## 🐄 Development