[Consent Export] Include file-type extensions; Convert webm to wav

[imnasnainaec]

Resolves #2897

Acceptance test:

• Go to project settings, select the "Users" tab, and go to "Manage speakers" at the bottom
• Add a speakers and add an audio consent to the speaker:
  • Click the + icon next to one speaker and "Record audio consent"
  • Record some sound
  • Confirm that the + icon is replaced with a green triangle icon
  • Click the green triangle and confirm that you hear the sound
  • Confirm that consent deletion works:
    • Shift click the green triangle and delete the recording
    • Confirm that the + icon is back
  • Add a new recording to the speaker and confirm that it plays
• Add a second speaker and add an image consent to the speaker:
  • Click the + icon next to this new speaker and "Upload image consent"
  • Select an image file from your computer and upload it
  • Confirm that the + icon is replaced with a generic image icon
  • Click the image icon to confirm that the consent image was uploaded
• At the top of the project settings, select the "Import/Export" tab
• Export the project
• When download is complete, open the downloaded .zip and the folder within
• Open the "consent" subfolder
• Confirm that there is a ".wav" file with the sound you recorded
• Confirm that there is an image file containing the image you uploaded and with the right extension

---

This change is 

[codecov-commenter]

Codecov Report

Attention: 22 lines in your changes are missing coverage. Please review.

Comparison is base (0ce9cd0) 72.83% compared to head (3c53bb6) 72.70%.

Files	Patch %	Lines
Backend/Controllers/SpeakerController.cs	35.29%	6 Missing and 5 partials ⚠️
Backend/Services/LiftService.cs	0.00%	11 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2900      +/-   ##
==========================================
- Coverage   72.83%   72.70%   -0.14%     
==========================================
  Files         266      266              
  Lines       10279    10303      +24     
  Branches     1212     1216       +4     
==========================================
+ Hits         7487     7491       +4     
- Misses       2444     2460      +16     
- Partials      348      352       +4     

Flag	Coverage Δ
backend	82.94% <35.29%> (-0.32%)	⬇️
frontend	62.90% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[jasonleenaylor]

Reviewed 2 of 3 files at r2, all commit messages.
Reviewable status: 2 of 3 files reviewed, 1 unresolved discussion (waiting on @imnasnainaec)

---

Backend/Controllers/SpeakerController.cs line 247 at r2 (raw file):

            {
                speaker.Consent = ConsentType.Audio;
                extension = ".webm";

So, what if someone uploads a .wav file, or an .ogg file?

[imnasnainaec]

Reviewed 2 of 3 files at r2, all commit messages.
Reviewable status: 2 of 3 files reviewed, 1 unresolved discussion (waiting on @imnasnainaec)

Backend/Controllers/SpeakerController.cs line 247 at r2 (raw file):

            {
                speaker.Consent = ConsentType.Audio;
                extension = ".webm";

So, what if someone uploads a .wav file, or an .ogg file?

We currently only support image upload.

[jasonleenaylor]

Reviewed 1 of 3 files at r2.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @imnasnainaec)