feat: introducing maverick

substreams/ethereum-maverick/abi/README.md

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+# ABIs
+
+`get_abis.py` is a simple python script using the etherscan API (free plan) to gather ABIs for all of the contracts we are tracking!
+
+We then can define all of the abis via `substreams_ethereum::Abigen::new` in our `build.rs`.
+
+## Recommendation
+
+It would be apt to convert (maybe through copilot) the python code into the `build.rs` file and then automate the `Abigen` functionality.
+
+## Usage
+
+Requires `python 3.8+`,
+
+```bash
+cd abi
+python get_abis.py
+```
+
+This will populate the files in the `abi` folder.
+
+When the `build.rs` file runs (when `rust-analyzer` activates or `cargo build` is manually ran), Abigen will generate new rust src files from the abis in the `src/abi` folder.