Custom chain spec modifications

[Fahrrader]

We'd like to further modify generated chain-specs before chains are launched with them, in particular using our tool chainql, with a possibility to edit both human-readable and raw specs. An example where this would be useful is to store some current data from another chain's storage into the chain spec to launch the test network with.

A way to implement this would be to allow custom CLI commands be stored in the network description (.toml / .json) and be executed with the chain spec after all other modifications to it that Zombienet already provides.

I'm ready to implement this and draft a PR, if you approve of this motion. If this warrants further discussion, I'm happy to talk. :)

[pepoviola]

As reference, questions about this issue are in the pr.
Thx!

[Polkadot-Forum]

This issue has been mentioned on Polkadot Forum. There might be relevant details there:

https://forum.polkadot.network/t/discover-chainql-unique-networks-advanced-tool-for-substrate-chain-storage/2861/1

[pepoviola]

Hi @Fahrrader, closing here. Thanks for your feedback and this initiative.
Thx!