Introduce PdfExportService and platform interfaces

[andreia-ferreira]

Towards #3715

Introduces the scaffolding for PDF export of submission data. This is platform-independent and has the PdfExportService as entry point. The provider/renderer/launcher interfaces will be implemented on the platform level on the next PR. This new code is part of a new KMP module :feature:pdf

Additionally, as a small cleanup, removed the jvm from the core:ui gradle config because otherwise all expect/actual logic would have to be also implemented on jvmMain. Also added androidLibrary target to core:testing so that the fake testing classes are possible to be used by modules that contain that target

This introduces no functionality changes.

@shobhitagarwal1612 PTAL?

[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 68.12%. Comparing base (8100beb) to head (9fb2e7f).

Files with missing lines	Patch %	Lines
...id/ui/home/mapcontainer/jobs/ShareLocationModal.kt	69.23%	3 Missing and 1 partial ⚠️
...datacollection/DataSubmissionConfirmationScreen.kt	76.92%	2 Missing and 1 partial ⚠️
.../ui/datacollection/DataCollectionScreenPreviews.kt	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #3758      +/-   ##
============================================
+ Coverage     68.05%   68.12%   +0.06%     
+ Complexity     1617     1616       -1     
============================================
  Files           369      369              
  Lines          9542     9537       -5     
  Branches       1246     1248       +2     
============================================
+ Hits           6494     6497       +3     
+ Misses         2378     2368      -10     
- Partials        670      672       +2     

Files with missing lines	Coverage Δ
...tform/domain/model/locationofinterest/LoiReport.kt	100.00% <100.00%> (ø)
...undplatform/domain/usecases/GetLoiReportUseCase.kt	89.58% <100.00%> (+0.45%)	⬆️
.../ui/datacollection/DataCollectionScreenPreviews.kt	0.00% <0.00%> (ø)
...datacollection/DataSubmissionConfirmationScreen.kt	90.32% <76.92%> (-1.26%)	⬇️
...id/ui/home/mapcontainer/jobs/ShareLocationModal.kt	66.12% <69.23%> (+2.06%)	⬆️

... and 1 file with indirect coverage changes

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[shobhitagarwal1612]

If renderer.render() throws an exception (e.g. out of memory, disk full, etc.), a partially written or corrupted 0-byte file might be left on the disk. To prevent opening/sharing broken PDFs, please consider catching exceptions during rendering and delete the corrupted file. Then re-throw the exception so it can be handled upstream

[andreia-ferreira]

thanks for catching this. Added the exception handling 👍

[shobhitagarwal1612]

Will this work for other locales (e.g. japanese or arabic characters)?

[andreia-ferreira]

good point, this would not work. I updated it so now characters from all languages are preserved