feat: add Sonnet 3.7 prompts for code creation slash commands

Problem to solve

We need to update the code creation slash commands to use thew new Claude 3.7 Sonnet

  • /explain
  • /fix
  • /tests
  • /refactor

Proposal

We should update the prompts for the code creation slash commands to use the new claude_3_7 model. Since we want to roll this out as a feature flag, we should add them as 0.0.1-dev so that it's not picked up automatically

Further details

Links / references