Generate Command Returns & Hamster Rules

The generate command is back by popular demand with Markdown output format and tag filtering. Plus Hamster integration rules for the rules system.

#1446 2316e94 Thanks @Crunchyman-ralph! - Bring back task-master generate as a command and mcp tool (after popular demand)
- Generated files are now .md instead of .txt
  - They also follow the markdownlint format making them look like more standard md files
- added parameters to generate allowing you to generate with the --tag flag
  - If I am on an active tag and want to generate files from another tag, I can with the tag parameter
- See task-master generate --help for more information.
#1454 38ff7eb Thanks @Crunchyman-ralph! - Add Hamster rules to task-master rules