fix: small fix and refactor after testing EkuboV2 (#188)

* fix: add `balance_owner` attribute for ekubo_v2 components

* refactor: rename `ekubo` into `ekubo-v2`

* refactor: freeze `substreams-helper` version in ekubo V2 module

* docs: improve integration test comment

* docs: add TODO to remove `balance_owner` in favor of `AccountBalances`

---------

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

substreams/ethereum-ekubo-v2/Cargo.toml

@@ -0,0 +1,26 @@
+[package]
+name = "ethereum-ekubo-v2"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+name = "ethereum_ekubo_v2"
+crate-type = ["cdylib"]
+
+[dependencies]
+substreams = "0.5.22"
+substreams-ethereum = "0.9.9"
+substreams-helper = { git = "https://github.com/propeller-heads/tycho-protocol-sdk.git", rev = "e4609be" }
+tycho-substreams = { git = "https://github.com/propeller-heads/tycho-protocol-sdk.git", rev = "3c08359" }
+prost = "0.11"
+anyhow = "1.0.95"
+ethabi = "18.0.0"
+num-bigint = "0.4.6"
+hex = { version = "0.4", features = ["serde"] }
+itertools = "0.10.5"
+serde = "1.0.217"
+serde_qs = "0.13.0"
+
+[build-dependencies]
+anyhow = "1"
+substreams-ethereum = "0.9.9"