migrate to scratch.nu

Quick Start:

• todo-cat-add to add a category
  • Supports multiple tags under the same category: category:tag1/tag2/tag3
• todo-add -t [A:1/2] 'hello' to add a todo
• todo-list A:1 to view
  • Default to hide the :trash tag.
  • Category without a tag acts as a wildcard *, for instance: project: is equivalent to project:*
  • Utilize & and ! as prefixes to denote and, not, respectively, for example: plan:a &plan:b !plan:c
  • --markdown output in markdown format
  • View trash: todo-list :trash --all (todo trash in shortcut.nu)

best practice: - write a todo before coding, generate and update TODO.md after finish, and relevant todos as commit messages. todo-commit proj:todo -f scripts/todo/TODO.md -t 87