allow align to be multi-layer

[joamatab]

• allow many components to easily be duplicated across different layers
• add OCR font as the default font for gf.components.text_freetype

[codecov]

Codecov Report

Merging #2200 (425cb48) into main (07fbd3f) will increase coverage by 0.32%.
The diff coverage is 79.88%.

@@            Coverage Diff             @@
##             main    #2200      +/-   ##
==========================================
+ Coverage   72.77%   73.09%   +0.32%     
==========================================
  Files         368      368              
  Lines       22944    22970      +26     
  Branches     3380     3389       +9     
==========================================
+ Hits        16697    16790      +93     
+ Misses       5173     5098      -75     
- Partials     1074     1082       +8     

Files	Coverage Δ
gdsfactory/components/cdsem_straight.py	83.33% <100.00%> (ø)
gdsfactory/components/cross.py	100.00% <100.00%> (ø)
gdsfactory/components/dicing_lane.py	100.00% <100.00%> (ø)
gdsfactory/components/fiducial_squares.py	100.00% <100.00%> (ø)
gdsfactory/components/logo.py	100.00% <100.00%> (ø)
gdsfactory/components/rectangle.py	93.93% <100.00%> (+0.18%)	⬆️
gdsfactory/components/text.py	83.67% <100.00%> (+0.69%)	⬆️
gdsfactory/components/text_rectangular.py	81.81% <100.00%> (+0.86%)	⬆️
gdsfactory/components/triangles.py	57.14% <100.00%> (+2.59%)	⬆️
gdsfactory/config.py	59.79% <100.00%> (+0.40%)	⬆️
... and 5 more

... and 2 files with indirect coverage changes

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