✨ feat: add support for custom YAML-based logic/behavior

[evolvewithevan]

✨ feat: add support for custom YAML-based logic/behavior

Enable users to define custom logic blocks via YAML—for example, dynamically inserting server/member stats into messages or triggering specific responses based on conditions.

✅ Tasks

• Extend YAML schema to support logic: blocks
• Define supported logic functions (e.g., member_count, server_name, is_boosted)
• Implement logic parser/interpreter to evaluate expressions inside YAML
• Allow logic blocks in embeds, messages, and possibly conditions
• Add fallback handling for unavailable or invalid logic
• Document all supported logic features and usage patterns

🧠 Examples

description: "This server has {{ logic.member_count }} members!"
logic:
  member_count: guild.member_count