BREAKING(cli/unstable): replace ... more content indication with up and down arrows

[timreichen]

After trying the api, ... seems not too intuitive, nothing indicates if there is more content above.
This PR changes the more content indication ... to a ↓ arrow and additionally it indicates if moving up is possible with a ↑ arrow. It also adds indicator and visibleLines properties to promptMultipleSelect().

What country are you from?
❯ Brazil
  United States
  Japan
  ↓

...

What country are you from?
  ↑
  United States
  Japan
❯ China
  ↓

...

What country are you from?
  ↑
  China
  Canada
❯ Spain

[codecov]

Codecov Report

Attention: Patch coverage is 96.80851% with 3 lines in your changes missing coverage. Please review.

Project coverage is 94.65%. Comparing base (0ad72c3) to head (c8b61d3).

Files with missing lines	Patch %	Lines
cli/unstable_prompt_multiple_select.ts	95.65%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6699   +/-   ##
=======================================
  Coverage   94.65%   94.65%           
=======================================
  Files         576      576           
  Lines       47060    47129   +69     
  Branches     6608     6621   +13     
=======================================
+ Hits        44545    44611   +66     
- Misses       2473     2476    +3     
  Partials       42       42           

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[kt3k]

Is this way of indicating 'more content' common in general? What do other tools do for this situation?

cc @WasixXD

[WasixXD]

Some tools just loop over (like Inquirer select) and others don't even bother, but I find the arrows a nice fit