Ability to "Star" Goals + Starred Goals shown first in all goals lists & goals columns

[mattab]

Acceptance criteria

• on the "Manage Goals" page, there is a new column, in first position, with a "Star" icon
• it appears empty by default for all goals eg. ⚝
• and any Write or Admin or Super User can click the star icon to star a Goal and then the star appears yellow: ⭐
• this is not a per-user preference, but a website setting - so when a goal is starred, the setting is recorded within the website/measurable. So if anyone starred any goals on that website, every user with access to the site will see it as starred
• read-only users cannot star goals

Design: basic, eg. similar to how Jira does it:

Then when one or more Goals have been starred then Matomo will change its display to:

• for starred goals, show them first at top in "Goals > Overview" page (with star icon shown next to title)
• for starred goals, show them first in the Goal name in the Goal Selector in left menu (with star icon appended in the Select element)
• in the “Add widget” selector on dashboard, show first the starred goals reports - then the others goals
  -- (Similar in the Settings > Platform > widgets selector)
• for starred goals, when viewing Display a table with Goals metrics,
  -- the append a star icon (with white empty background) after all column names for this starred goals
  -- show all starred goals columns first on the left, then show non-starred goals afterwards
• So whenever we list goals, they are sorted starred goals first, then sorted alphabetically

Related: #17950