lfs: drop dvc objects dependency

[pmrowla]

• Drops dvc-objects usage in favor of fsspec equivalents
• Drops DVC jobs/_JOBS usage in favor of exposing fsspec batch_size (see https://github.com/iterative/scmrepo/pull/315#issuecomment-1928855658)

[codecov-commenter]

Codecov Report

Attention: 45 lines in your changes are missing coverage. Please review.

Comparison is base (641ee43) 78.42% compared to head (ea24769) 77.82%.

Files	Patch %	Lines
src/scmrepo/git/lfs/progress.py	33.33%	30 Missing :warning:
src/scmrepo/git/lfs/client.py	35.00%	13 Missing :warning:
src/scmrepo/git/lfs/storage.py	0.00%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #320 +/- ## ========================================== - Coverage 78.42% 77.82% -0.60% ========================================== Files 39 39 Lines 4969 5024 +55 Branches 892 902 +10 ========================================== + Hits 3897 3910 +13 - Misses 918 960 +42 Partials 154 154 ```

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