feat: Added chain generating for debank apps

[Vinsho]

No description provided.

[Copilot]

Pull request overview

Adds chain attribution for DeBank “apps” parsing and switches deposit token parsing to a typed token model so downstream consumers can reliably access token fields.

Changes:

• Introduced DEBANK_APP_CHAIN_MAP and used it to populate a chain: Blockchain field on parsed DebankPrediction and DebankAppDeposit.
• Replaced raw dict token handling for app deposits with a new typed DebankDepositToken model and updated parsing to use asset_token_list.
• Updated app parser tests to assert chain and typed token access.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
blockapi/v2/models.py	Adds DebankDepositToken, types app deposit tokens, and adds chain to app-level parsed models.
blockapi/v2/api/debank_maps.py	Adds an app-id → chain mapping used during app parsing.
blockapi/v2/api/debank.py	Threads chain through app parsing into deposits and predictions; switches deposit token extraction to asset_token_list.
blockapi/test/v2/api/debank/test_debank_fetch.py	Adds an integration test stub for fetching apps (but currently not asserting).
blockapi/test/v2/api/debank/test_debank_app_parser.py	Extends parser tests to assert chain and typed token access.

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