[CmdPal] Add match score hint to fallback items

[jiripolasek]

Description of the new feature / enhancement

Hi, I'd like to propose an idea for fallback items to indicate how well they match the query, as supplemental information for their ranking in the list of results.

I can imagine that we could have levels such as:

• The list item represents an exact match.
• The list item recognizes the format or has a partial match.
• The list item can do something with the query because it works on everything (e.g., run).

This would allow top-level search to better order the results automatically.

It could also enable have more useful or verbose titles and subtitles, since it would reduce the need to use them for aggressive SEO.

Similar: #38288

Scenario when this would be used?

• Date & Time extension:
  • Recognizes keywords like "now" or "time" to provide the value.
• Web search extension:
  • Recognizes URLs or domain names (CmdPal: weighting for open url handler could be better #39419).
• Calculator extension:
  • Recognizes and prioritizes math equations (e.g., 12+12).
• Run:
  • Would prefer executable file names.
• Colors extension:
  • Hex or CSS color codes (e.g., "#ff0000" or "rgb(255 0 0)") are exact matches.
  • Named colors like "red" have high confidence, while uncommon names like "squirrel" have low confidence.

Supporting information

No response