Ekubo TWAMM & MEV-resist integration (#192)

* Add Ekubo TWAMM support

* Change order of words

* Account TWAMM order balances

* Fix tracking wrong component balance deltas

Swapped and PositionUpdated are the only events affecting pool TVL

* Fix fee addition

Fees are a .64 instead of a .128 since v2 & the result is rounded

* Consistent naming

* cargo fmt

* Add method for selecting store method from change type

* Only store the affected sale rate delta on OrderUpdated events

* Remove unnecessary parameterization

* Index Ekubo MEV-resist pools

* cargo clippy

substreams/ethereum-ekubo-v2/src/twamm.rs

@@ -0,0 +1,27 @@
+use substreams::scalar::BigInt;
+
+use crate::pool_key::{PoolConfig, PoolKey};
+
+pub type OrderKey = (Vec<u8>, Vec<u8>, BigInt, BigInt, BigInt);
+
+impl PoolKey {
+    pub fn from_order_key(key: &OrderKey, twamm_address: &Vec<u8>) -> Self {
+        let (token0, token1) = if key.1 > key.0 { (&key.0, &key.1) } else { (&key.1, &key.0) };
+
+        Self {
+            token0: <&[u8; 20]>::try_from(token0.as_slice())
+                .unwrap()
+                .into(),
+            token1: <&[u8; 20]>::try_from(token1.as_slice())
+                .unwrap()
+                .into(),
+            config: PoolConfig {
+                fee: key.2.to_u64(),
+                tick_spacing: 0,
+                extension: <&[u8; 20]>::try_from(twamm_address.as_slice())
+                    .unwrap()
+                    .into(),
+            },
+        }
+    }
+}