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/Cargo.toml

@@ -0,0 +1,30 @@
+[package]
+name = "ethereum-balancer-v2"
+version = "0.2.3"
+edition = "2021"
+
+[lib]
+name = "ethereum_balancer_v2"
+crate-type = ["cdylib"]
+
+[dependencies]
+substreams.workspace = true
+substreams-ethereum.workspace = true
+prost.workspace = true
+prost-types.workspace = true
+hex-literal.workspace = true
+ethabi.workspace = true
+hex.workspace = true
+bytes = "1.5.0"
+anyhow = "1.0.75"
+num-bigint = "0.4.4"
+itertools = "0.12.0"
+tycho-substreams.workspace = true
+
+[build-dependencies]
+anyhow = "1"
+substreams-ethereum = "0.9"
+
+# Required so that ethabi > ethereum-types build correctly under wasm32-unknown-unknown
+[target.wasm32-unknown-unknown.dependencies]
+getrandom = { version = "0.2", features = ["custom"] }