check in large pyreport sample using git-lfs

[matt-codecov]

Git LFS is a git extension that lets you check in "pointers" to large files and upload the files themselves to a separate LFS store (for us, that's GitHub's LFS server). it's powered by git hooks that make it seem as though the large files are actually in the repository when you're working with it locally

using it for large sample reports will let us write benchmarks or integration tests against large, real-world data without bloating the repository

$ brew install git-lfs
$ cd /path/to/codecov-rs
$ git lfs install

if we want to use LFS files in CI jobs, we will need to tell the checkout step to check out LFS files too somehow

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.16%. Comparing base (19cf114) to head (a072c52).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #22   +/-   ##
=======================================
  Coverage   99.16%   99.16%           
=======================================
  Files          17       17           
  Lines        7526     7526           
=======================================
  Hits         7463     7463           
  Misses         63       63           

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[Swatinem]

These are the first real world "fixtures".

How about we put them in /fixtures/pyreport/large/…
Then we can add other things such as /fixtures/lcov/…, /fixtures/llvm/…, etc for various other coverage file fixtures.

[matt-codecov]

hm, i think fixtures/**/large in .gitattributes would probably work in your scheme without making us have to remember to run git lfs track reports/pyreport/large each time we add a new dir

i was imagining the following which would Just Work with the current glob in .gitattributes:

reports/
  - large/
    - pyreport/
    - lcov/
  - pyreport/
  - lcov/

[matt-codecov]

updated