feat(user-feedback): capture envelopes

[armcknight]

for #4272; #skip-changelog

capture the user feedback in an envelope. currently, an error is required to have been captured, with its event ID supplied in the user feedback object. so, a dummy error is currently created to satisfy this requirement to be able to see them in the dashboard (see linked issue for progress/results)

TODOs

• this currently captures feedback using the old captureFeedback function. need to implement the new feedback envelope format and then capture the envelope that way: https://develop.sentry.dev/application/feedback-architecture/#feedback-events

[github-actions]

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📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 13 lines in your changes missing coverage. Please review.

Project coverage is 90.761%. Comparing base (f24bd66) to head (210286d).

Files with missing lines	Patch %	Lines
...grations/UserFeedback/SentryUserFeedbackForm.swift	0.000%	12 Missing ⚠️
...ations/UserFeedback/SentryUserFeedbackWidget.swift	0.000%	1 Missing ⚠️

Additional details and impacted files

@@                            Coverage Diff                            @@
##           armcknight/feat(user-feedback)/form     #4535       +/-   ##
=========================================================================
- Coverage                               90.927%   90.761%   -0.167%     
=========================================================================
  Files                                      617       618        +1     
  Lines                                    70421     69372     -1049     
  Branches                                 25161     24828      -333     
=========================================================================
- Hits                                     64032     62963     -1069     
- Misses                                    6296      6316       +20     
  Partials                                    93        93               

Files with missing lines	Coverage Δ
...Feedback/SentryUserFeedbackIntegrationDriver.swift	0.000% <ø> (ø)
...ations/UserFeedback/SentryUserFeedbackWidget.swift	0.000% <0.000%> (ø)
...grations/UserFeedback/SentryUserFeedbackForm.swift	0.000% <0.000%> (ø)

... and 68 files with indirect coverage changes

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[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1237.08 ms	1256.96 ms	19.88 ms
Size	21.90 KiB	746.34 KiB	724.43 KiB

Baseline results on branch: armcknight/feat(user-feedback)/form

Startup times

Revision	Plain	With Sentry	Diff
fb731a3	1228.04 ms	1256.69 ms	28.65 ms
8060f3f	1229.92 ms	1248.67 ms	18.75 ms

App size

Revision	Plain	With Sentry	Diff
fb731a3	22.30 KiB	745.19 KiB	722.89 KiB
8060f3f	22.30 KiB	747.19 KiB	724.88 KiB

Previous results on branch: armcknight/feat(user-feedback)/envelope

Startup times

Revision	Plain	With Sentry	Diff
86abdac	1209.79 ms	1233.82 ms	24.02 ms

App size

Revision	Plain	With Sentry	Diff
86abdac	21.90 KiB	744.30 KiB	722.40 KiB