Add possibility of adding label when adding fiber array

[mdecea]

I added the possibility of adding a text to a structure when adding a fiber array. I believe this functionality is useful, since this way one can add an identifier to a test structure when adding fiber arrays. Doing it this way allows to place the labels with respect to the grating couplers, which is likely the safest placement so as to not interact with the component itself.

You can choose to place the label in different positions:

add_fiber_array(c, dev_id='abc', text=text_m3, id_placement="l") will place the label at the left of the grating coupler array:

add_fiber_array(c, dev_id='abc', text=text_m3, id_placement="r") will place the label at the right of the grating coupler array:

add_fiber_array(c, dev_id='abc', text=text_m3, id_placement="center") will place the label at the center of the grating coupler array:

add_fiber_array(c, dev_id='abc', text=text_m3, id_placement="s") will place the label at the center of the grating coupler array but below the array:

By default no text is added.

[codecov]

Codecov Report

Attention: 27 lines in your changes are missing coverage. Please review.

Comparison is base (5aabf7a) 72.27% compared to head (597fbe3) 72.19%.
Report is 1 commits behind head on main.

Files	Patch %	Lines
gdsfactory/routing/add_fiber_array.py	3.57%	26 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2535      +/-   ##
==========================================
- Coverage   72.27%   72.19%   -0.08%     
==========================================
  Files         366      366              
  Lines       23671    23700      +29     
  Branches     3888     3905      +17     
==========================================
+ Hits        17108    17110       +2     
- Misses       5379     5405      +26     
- Partials     1184     1185       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[joamatab]

Looks great Marc!