Detect quote convention from file Paratext project

[benjaminking]

This PR adds a class that can detect the quote convention for a Paratext project from a project directory. This class will primarily be used by SILNLP to detect the quote convention for the source and target projects.

---

This change is 

[Enkidu93]

@Enkidu93 reviewed all commit messages.
Reviewable status: 0 of 1 files reviewed, 1 unresolved discussion

---

machine/corpora/file_paratext_project_quote_convention_detector.py line 18 at r1 (raw file):

        return (Path(self._project_dir) / file_name).exists()

    def _open(self, file_name: str) -> Optional[BinaryIO]:

I don't think this method can ever return None, so you don't need Optional. Also, you should use StrPath rather than str consistently here to match the other file_... implementation classes.

[Enkidu93]

(Just remembering that this isn't in yet - https://reviewable.io/reviews/sillsdev/silnlp/806#-OZdHeea77ETxx9aywUn. As soon as this is in, I can release a new machine.py version)

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.11%. Comparing base (146f195) to head (20f7897).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #224   +/-   ##
=======================================
  Coverage   91.11%   91.11%           
=======================================
  Files         333      333           
  Lines       21706    21706           
=======================================
  Hits        19778    19778           
  Misses       1928     1928           

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

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[benjaminking]

Reviewable status: 0 of 1 files reviewed, 1 unresolved discussion (waiting on @ddaspit and @Enkidu93)

---

machine/corpora/file_paratext_project_quote_convention_detector.py line 18 at r1 (raw file):

Previously, Enkidu93 (Eli C. Lowry) wrote…

I don't think this method can ever return None, so you don't need Optional. Also, you should use StrPath rather than str consistently here to match the other file_... implementation classes.

Done.

[Enkidu93]

@Enkidu93 reviewed 1 of 1 files at r2, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @ddaspit)