feat: Add `save-as` icon

[MarcelloTheArcane]

Closes https://github.com/feathericons/feather/issues/609

Having problems with installing, so I haven't run any tests on this. @johnletey kindly formatted, so hopefully all good to go!

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (3c64e93) to head (39bdd50). Report is 64 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #700   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            5         5           
  Lines           34        34           
  Branches         3         3           
=========================================
  Hits            34        34           

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[moeenio]

You should rename to "feat: Add `save-as` icon"

[MarcelloTheArcane]

@locness3 Done, thanks.