feat(substreams): add substreams for Uniswap v2 and v3

substreams/ethereum-uniswap-v2/src/modules/2_store_pools.rs

@@ -0,0 +1,25 @@
+use substreams::store::{StoreNew, StoreSetIfNotExists, StoreSetIfNotExistsProto};
+
+use crate::{
+    pb::tycho::evm::v1::{BlockChanges, ProtocolComponent},
+    store_key::StoreKey,
+};
+
+#[substreams::handlers::store]
+pub fn store_pools(
+    pools_created: BlockChanges,
+    store: StoreSetIfNotExistsProto<ProtocolComponent>,
+) {
+    // Store pools. Required so the next steps can match any event to a known pool by their address
+
+    for change in pools_created.changes {
+        for new_protocol_component in change.component_changes {
+            //  Use ordinal 0 because the address should be unique, so ordering doesn't matter.
+            store.set_if_not_exists(
+                0,
+                StoreKey::Pool.get_unique_pool_key(&new_protocol_component.id),
+                &new_protocol_component,
+            );
+        }
+    }
+}