Crypto quotes and slippage

[sli-tao]

Taoshi Pull Request

Description

Fetch crypto bid ask quotes, and calculate slippage using direct BB+ model

Related Issues (JIRA)

[Reference any related issues or tasks that this pull request addresses or closes.]

Checklist

• I have tested my changes on testnet.
• I have updated any necessary documentation.
• I have added unit tests for my changes (if applicable).
• If there are breaking changes for validators, I have (or will) notify the community in Discord of the release.

Reviewer Instructions

[Provide any specific instructions or areas you would like the reviewer to focus on.]

Definition of Done

• Code has been reviewed.
• All checks and tests pass.
• Documentation is up to date.
• Approved by at least one reviewer.

Checklist (for the reviewer)

• Code follows project conventions.
• Code is well-documented.
• Changes are necessary and align with the project's goals.
• No breaking changes introduced.

Optional: Deploy Notes

[Any instructions or notes related to deployment, if applicable.]

/cc @mention_reviewer

[deepsource-io]

Here's the code health analysis summary for commits 8cbbeee..23220c4. View details on DeepSource ↗.

Analysis Summary

Analyzer	Status	Summary	Link
Shell	✅ Success		View Check ↗
Test coverage	⚠️ Artifact not reported	Timed out: Artifact was never reported	View Check ↗
Python	❌ Failure	❗ 84 occurences introduced 🎯 31 occurences resolved	View Check ↗

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