Feat(phonebook): button to copy a pastable email list

[Marc-Andrieu]

As asked by the clients of this module, a button to copy to clipboard the email list of an association's term, so that it can be pasted in and parsed by mail clients

Not sure it's the best UI rendering, tho

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 53.74%. Comparing base (52c1283) to head (35bc99b).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #619   +/-   ##
=======================================
  Coverage   53.74%   53.74%           
=======================================
  Files         165      165           
  Lines        3606     3606           
=======================================
  Hits         1938     1938           
  Misses       1668     1668           

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