Add NEAR AI Cloud provider

[PierreLeGuen]

Summary

• Add NEAR AI Cloud as an OpenAI-compatible provider with NEARAI_API_KEY and https://cloud-api.near.ai/v1 defaults.
• Register NEAR AI Cloud in the desktop provider catalog, model fetch support, access help, and provider icon mapping.
• Add a native Aster provider wrapper with NEAR AI Cloud defaults and public catalog model discovery.

Implementation notes

• NEAR AI model discovery uses the public /v1/model/list catalog and does not require an API key for catalog fetches.
• Dynamic catalog parsing maps text-output models to chat completions and image-output models to the images API, while filtering non-inference catalog entries such as the privacy filter and embeddings.
• Connection testing uses the NEAR catalog endpoint instead of the generic OpenAI /models path.

Testing

• cargo test --manifest-path src-tauri/Cargo.toml -p lime-core nearai
• cargo test --manifest-path src-tauri/Cargo.toml -p lime-core provider_type
• cargo test --manifest-path src-tauri/Cargo.toml -p lime-services nearai
• npm test -- src/lib/model/providerModelFetchSupport.test.ts
• npm run typecheck
• pnpm exec eslint src/lib/model/providerModelFetchSupport.ts src/lib/model/providerModelFetchSupport.test.ts src/lib/provider/providerAccessHelp.ts src/components/api-key-provider/ModelAddPanel.tsx src/icons/providers/utils.ts --max-warnings 0

Standalone Aster crate tests are currently blocked because the Aster lockfile pins uuid 1.24.0, which the current crates.io index does not resolve.