feature: added device_frame to widgetbook

[jenshor]

• Integrated device_frame into widgetbook.
• added iPhone 13 models
• changed device classes to feature freezed

List of issues which are fixed by the PR

#112

[codecov-commenter]

Codecov Report

Merging #114 (4707925) into main (13b16f1) will decrease coverage by 6.71%.
The diff coverage is 20.63%.

@@            Coverage Diff             @@
##             main     #114      +/-   ##
==========================================
- Coverage   45.42%   38.70%   -6.72%     
==========================================
  Files         108      111       +3     
  Lines        1497     1922     +425     
==========================================
+ Hits          680      744      +64     
- Misses        817     1178     +361     

Impacted Files	Coverage Δ
...ook/lib/src/rendering/builders/device_builder.dart	4.34% <0.00%> (-28.99%)	⬇️
...widgetbook/lib/src/rendering/widgetbook_frame.dart	66.66% <ø> (ø)
packages/widgetbook/lib/src/widgetbook.dart	13.09% <ø> (ø)
...getbook_models/lib/src/devices/device.freezed.dart	18.71% <18.71%> (ø)
...ook_models/lib/src/devices/resolution.freezed.dart	29.16% <29.16%> (ø)
...ok_models/lib/src/devices/device_size.freezed.dart	29.54% <29.54%> (ø)
...ages/widgetbook_models/lib/src/devices/device.dart	100.00% <100.00%> (ø)
...widgetbook_models/lib/src/devices/device_size.dart	100.00% <100.00%> (ø)
.../widgetbook_models/lib/src/devices/resolution.dart	100.00% <100.00%> (ø)
...ackages/widgetbook/lib/src/workbench/renderer.dart	0.00% <0.00%> (ø)
... and 1 more

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