Add support for Substrate-based chains (for Polkadot, Kusama, et al.)#68

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Oskal174 wants to merge 4 commits intomainfrom

substrate-chains

Commits on Dec 25, 2023

Commits on Jun 14, 2024

fixed fee logic for old and new type of fees, added substrate address decoding
alexqrid
committed
fixed typo and preserve naming convention
alexqrid
committed