Add French transcreated content for edit PDF feature

[stephaniehobson]

One-line summary

Add French transcreated content for edit PDF feature

Significant changes and points to review

• Created French variant of features/pdf-editor
• Added French features/pdf-free
• Added French page features/pdf-comp

Issue / Bugzilla link

15098

Testing

http://localhost:8000/fr/firefox/features/pdf-editor/ http://localhost:8000/fr/firefox/features/free-pdf-editor/ http://localhost:8000/fr/firefox/features/complete-pdf/

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 37.50000% with 5 lines in your changes missing coverage. Please review.

Please upload report for BASE (main@7e525d4). Learn more about missing BASE report. Report is 35 commits behind head on main.

Files with missing lines	Patch %	Lines
bedrock/firefox/views.py	37.50%	5 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #15193 +/- ## ======================================= Coverage ? 78.49% ======================================= Files ? 158 Lines ? 8277 Branches ? 0 ======================================= Hits ? 6497 Misses ? 1780 Partials ? 0 ```

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