refactor: Return all supported tokens in available networks [WEB-1416]

[karelianpie]

WEB-1416 (subtask of WEB-1008)

Refactors TokenInterface#supported() to return all supported tokens not only from Zapper but also from Vaults and Iron Bank for the current network. At the moment zapper only works for Ethereum, but we return the Vaults and Iron Bank tokens for the other networks i.e. Fantom and Arbitrum.

• Deduplicates tokens giving higher priority to tokens coming from Vaults, then Iron Bank and Zapper respectively, always preserving the zapper support in cases where the zapper token is in other products;
• Fails gracefully if zapper is not available, returning the supported tokens from Vaults and Iron Bank;
• Add specs to cover all cases (please let me know if you spot an edge case missing and I'll add the test for it).

[linear[bot]]

WEB-1416 TokenInterface#supported() should return all supported tokens

1. sdk.tokens.supported() should return an array of all supported tokens from yearn products (Vaults, Labs, Zaps, other) for the current network.

[github-actions[bot]]

size-limit report 📦

Path	Size
dist/sdk.cjs.production.min.js	41.45 KB (+0.39% 🔺)
dist/sdk.esm.js	42.25 KB (+0.58% 🔺)

[xgambitox]

@karelianpie We also should always do some manual testing locally following https://github.com/yearn/yearn-sdk#debug-the-website-with-a-local-copy-of-the-sdk , trying to test the functionality that was changed, to make sure the app does not break, since we want to be very sure all works as expected.

[karelianpie]

@karelianpie We also should always do some manual testing locally following https://github.com/yearn/yearn-sdk#debug-the-website-with-a-local-copy-of-the-sdk , trying to test the functionality that was changed, to make sure the app does not break, since we want to be very sure all works as expected.

Ah nice, will do that 👍