feat(py): DESK action provider

[chenciao8]

Description

Add TradeOnDESK functionality which including:

• Getting platform information
• Getting user's data on platform
• Deposit and Withdraw Collateral to platform
• Trade on platform

Tests

Chatbot: python/examples/langchain-desk-chatbot/chatbot.py
Network: Arbitrum Sepolia
Setup: EVM Wallet with TestUSDC and Gas in wallet

Get account info on DESK

Prompt:

get my info on desk

Output:

Here is your current information on the desk:

### Collaterals
- **Asset**: USDC
- **Amount**: 22,581.56

### Positions
1. **Symbol**: VIRTUALUSD
   - **Quantity**: 1,340.20
   - **Average Entry Price**: 1.1028
   - **Side**: Short
   - **Last Updated Funding Fee**: 0.2676

2. **Symbol**: KAITOUSD
   - **Quantity**: 1,991.80
   - **Average Entry Price**: 1.4025
   - **Side**: Short
   - **Last Updated Funding Fee**: 0.0515

### Account Summary
- **Account Margin**: 23,879.59
- **Collateral Value**: 22,581.06
- **Unrealized P&L**: 509.28
- **Pending Funding Fee**: -789.25
- **Pending Borrowing Fee**: -0.0000000014
- **Account IMR**: 1,226.68
- **Order IMR**: 0.00
- **Position IMR**: 1,226.68
- **Position MMR**: 390.20

Place market order on DESK

Prompt:

market long btcusd for 0.01

Output:

Your market order to long **0.01 BTCUSD** has been successfully placed. Here are the details:

- **Subaccount**: 0x0123456789012345678901234567890123456789000000000000000000000001
- **Side**: Long
- **Order Type**: Market
- **Filled Quantity**: 0.01 BTC
- **Average Fill Price**: 82,969.00
- **Execution Fee**: 0.01
- **Order Digest**: 0x0000000000000000000000000000000000000000000000000000000000000001

Deposit collateral on DESK

Prompt:

deposit 10 usdc

Output:

Your deposit of **10 USDC** has been successfully completed. Here is the transaction hash for your reference:

- **Transaction Hash**: 0123456789012345678901234567890123456789012345678901234567890123

Checklist

A couple of things to include in your PR for completeness:

• Added documentation to all relevant README.md files
• Added a changelog entry

[cb-heimdall]

🟡 Heimdall Review Status

Requirement	Status	More Info
Reviews	🟡 0/1	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 0 Sum 1