Mock sample: Salesforce API #63

Description

Create a mock sample for the Salesforce API.

Why

• Massive enterprise footprint
• Complex API with many objects and relationships
• Sandbox environments have limitations
• Enables development without Salesforce org access

Suggested endpoints to mock

• SOQL queries
• Standard objects (Account, Contact, Opportunity, Lead)
• Custom objects
• Bulk API operations
• OAuth flow responses
• Error responses (INVALID_FIELD, MALFORMED_QUERY, etc.)