fix(balancer): miscellaneous improvements before resync (#104)

* fix(balancer): ignore self balance change

Euler pool emit a balance change for the pool itself. We don't want to have it because it's an unknown token from Tycho's perspective.

example: https://etherscan.io/tx/0x4a9ea683052afefdae3d189862868c3a7dc8f431d1d9828b6bfd9451a8816426#eventlog#338

* refactor(balancer): rename balancer module to balancer-v2

* ci: make clippy happy

---------

Co-authored-by: zizou <111426680+flopell@users.noreply.github.com>

substreams/ethereum-balancer-v2/substreams.yaml

@@ -0,0 +1,64 @@
+specVersion: v0.1.0
+package:
+  name: "ethereum_balancer_v2"
+  version: v0.2.3
+
+protobuf:
+  files:
+    - tycho/evm/v1/vm.proto
+    - tycho/evm/v1/common.proto
+    - tycho/evm/v1/utils.proto
+  importPaths:
+    - ../../proto
+
+binaries:
+  default:
+    type: wasm/rust-v1
+    file: ../target/wasm32-unknown-unknown/release/ethereum_balancer_v2.wasm
+
+modules:
+  - name: map_components
+    kind: map
+    initialBlock: 12272146
+    inputs:
+      - source: sf.ethereum.type.v2.Block
+    output:
+      type: proto:tycho.evm.v1.BlockTransactionProtocolComponents
+
+  - name: store_components
+    kind: store
+    initialBlock: 12272146
+    updatePolicy: set
+    valueType: string
+    inputs:
+      - map: map_components
+
+  - name: map_relative_balances
+    kind: map
+    initialBlock: 12272146
+    inputs:
+      - source: sf.ethereum.type.v2.Block
+      - store: store_components
+    output:
+      type: proto:tycho.evm.v1.BlockBalanceDeltas
+
+  - name: store_balances
+    kind: store
+    initialBlock: 12272146
+    updatePolicy: add
+    valueType: bigint
+    inputs:
+      - map: map_relative_balances
+
+  - name: map_protocol_changes
+    kind: map
+    initialBlock: 12272146
+    inputs:
+      - source: sf.ethereum.type.v2.Block
+      - map: map_components
+      - map: map_relative_balances
+      - store: store_components
+      - store: store_balances
+        mode: deltas # This is the key property that simplifies `BalanceChange` handling
+    output:
+      type: proto:tycho.evm.v1.BlockChanges