feat(ecosystem): Add Toucan to ecosystem.json

[aspiers]

---

What changed? Why?
Adds Toucan to the ecosystem page.

Notes to reviewers
Toucan has been live on Base since April 2024 (e.g. see https://dexscreener.com/watchlist/H4Elw1i20UH11iuKedY6 and https://app.toucan.earth/contracts#base).

How has it been tested?
Ran yarn workspace @app/web dev on localhost.

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[cb-heimdall]

🟡 Heimdall Review Status

Requirement	Status	More Info
Reviews	🟡 0/2	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 1 Sum 2

[wbnns]

@aspiers

Hi there! Thanks for building on Base! Please change the tags from other to defi.

[aspiers]

@wbnns Done!

[wbnns]

@aspiers

Apologies, we recently updated the way we categorize and subcategorize apps; could you please update your PR, conforming to the new format by removing the tag, and defining the category (defi) and subcategory (dex)?

We'll do our best to review as soon as possible once you do! 🙏

[aspiers]

@wbnns Updated. We're not a DEX but I couldn't find a way for us to neatly fit into the new taxonomy. The closest I found was consumer / real world since we tokenize carbon credits which are a form of RWA. We also provide on-chain baskets of carbon tokens which I guess could go under defi / portfolio, but it doesn't seem possible to select both.

[wbnns]

@aspiers Thank you for this information, this is currently being reviewed.