created new class-based chain config, incentiv testnet v2

[andygruening]

It continues to get harder to add new chains, when the current dictionaries grow. Instead of defining each chain in 7 different dictionaries, let's create an array of ChainConfig classes. When the static class is created, the existing dictionaries are automatically populated.

Going from 400 lines of code to 100
Existing integrations won't break.

This PR includes support for Incentiv Testnet v2

Version Increment

Please ensure you have incremented the package version in the package.json as necessary.

• I have incremented the package.json according to semantic versioning
• No version increment is needed; the change does not impact SDK or Sample code/assets

Docs Checklist

Please ensure you have addressed documentation updates if needed as part of this PR:

• I have created a separate PR on the sequence docs repository for documentation updates: Link to docs PR
• No documentation update is needed for this change.

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