allow choosing femwell solver

[joamatab]

• allow choosing femwell solver
• rename wl to wavelength to be consistent with other plugins

@simbilod
@HelgeGehring

[sourcery-ai]

Sourcery Code Quality Report

❌  Merging this PR will decrease code quality in the affected files by 0.18%.

Quality metrics	Before	After	Change
Complexity	8.53 🙂	8.53 🙂	0.00
Method Length	108.58 🙂	108.80 🙂	0.22 👎
Working memory	11.09 😞	11.32 😞	0.23 👎
Quality	55.53% 🙂	55.35% 🙂	-0.18% 👎

Other metrics	Before	After	Change
Lines	1353	1355	2

Changed files	Quality Before	Quality After	Quality Change
gdsfactory/simulation/fem/mode_solver.py	39.58% 😞	39.27% 😞	-0.31% 👎
gdsfactory/technology/layer_views.py	58.37% 🙂	58.21% 🙂	-0.16% 👎

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation
gdsfactory/simulation/fem/mode_solver.py	compute_component_slice_modes	18 🙂	348 ⛔	27 ⛔	20.50% ⛔	Try splitting into smaller methods. Extract out complex expressions
gdsfactory/technology/layer_views.py	LayerView._build_klayout_xml_element	17 🙂	359 ⛔	16 ⛔	27.05% 😞	Try splitting into smaller methods. Extract out complex expressions
gdsfactory/technology/layer_views.py	LayerViews.from_lyp	18 🙂	273 ⛔	11 😞	35.89% 😞	Try splitting into smaller methods. Extract out complex expressions
gdsfactory/technology/layer_views.py	LayerView.from_xml_element	13 🙂	277 ⛔	11 😞	39.78% 😞	Try splitting into smaller methods. Extract out complex expressions
gdsfactory/technology/layer_views.py	LayerViews.__init__	14 🙂	212 ⛔	12 😞	40.68% 😞	Try splitting into smaller methods. Extract out complex expressions

Legend and Explanation

The emojis denote the absolute quality of the code:

• ⭐ excellent
• 🙂 good
• 😞 poor
• ⛔ very poor

The 👍 and 👎 indicate whether the quality has improved or gotten worse with this pull request.

---

Please see our documentation here for details on how these metrics are calculated.

We are actively working on this report - lots more documentation and extra metrics to come!

Help us improve this quality report!

[codecov]

Codecov Report

Merging #1377 (e58c04c) into main (a3125a4) will not change coverage.
The diff coverage is 50.00%.

@@           Coverage Diff           @@
##             main    #1377   +/-   ##
=======================================
  Coverage   69.66%   69.66%           
=======================================
  Files         366      366           
  Lines       21844    21844           
  Branches     3128     3128           
=======================================
  Hits        15218    15218           
  Misses       5726     5726           
  Partials      900      900           

Impacted Files	Coverage Δ
gdsfactory/technology/layer_views.py	41.47% <50.00%> (ø)

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