Extrude can send IDs for the new faces

[adamchalmers]

When extruding a 2D shape into a 3D shape, a bunch of new faces are created. These faces need IDs. The backend currently generates these IDs randomly. Add a new option to allow the client to send the IDs.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

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Files with missing lines	Patch %	Lines
modeling-cmds/src/shared.rs	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #619   +/-   ##
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  Coverage        ?   24.00%           
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  Files           ?       35           
  Lines           ?     2029           
  Branches        ?        0           
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  Hits            ?      487           
  Misses          ?     1542           
  Partials        ?        0           

Flag	Coverage Δ
unittests	24.00% <0.00%> (?)

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