Support Week I YYYY as a weekly format

Hi David,

I've looked at this again and have some suggestions on potential changes:

Currently, the "Format" field serves two purposes (1) naming the weekly pages and (2) defining the range of daily note pages to be tagged with the weekly page.
I would suggest separating these functions into two fields:
- 1-Page naming
  - Users could insert custom text and/or dynamic fields
  - This would allow for weekly page names such as:
    - 2023-W26 - {{YYYY}}-W{{I}}
    - Week 26 2023 - Week {{I}} {{YYYY}}
      - I is ISO week of the year https://date-fns.org/v2.21.1/docs/format
- 2-Defining the range
  - Add default options to define week Monday-Sunday
  - Add help text to illustrate how users can change using dynamic fields Hope this helps.

RoamJS / workbench