File lock Linux/Unix using Python stdlib

[Nayef211]

Summary: Builds on D44604474 but uses Python stdlib so as to not as a new dependency on iopath.

Limitations:

• Does not work on Windows. Currently looking for a better solution; however, this should unblock bugs internally

Reviewed By: gl3lan

Differential Revision: D45048667

fbshipit-source-id: ef2f00d9c0ba99ca8b400206b8d84bad6c28f5c3

[pytorch-bot[bot]]

:link: Helpful Links

:test_tube: See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/text/2158

• :page_facing_up: Preview Python docs built from this PR

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:heavy_exclamation_mark: 1 Active SEVs

There are 1 currently active SEVs. If your PR is affected, please view them below:

• ROCm jobs are failing with No space left on device

:x: 5 Failures

As of commit 0b9d4b9cd9e1ce52d0dde7da82a32392933feb7c:

NEW FAILURES - The following jobs have failed:

* [build](https://hud.pytorch.org/pr/pytorch/text/2158#12933872751) ([gh](https://github.com/pytorch/text/actions/runs/4768068962/jobs/8476977729)) * [tests (3.10) / windows-job](https://hud.pytorch.org/pr/pytorch/text/2158#12933873018) ([gh](https://github.com/pytorch/text/actions/runs/4768069013/jobs/8476977948)) * [tests (3.8) / linux-job](https://hud.pytorch.org/pr/pytorch/text/2158#12933873207) ([gh](https://github.com/pytorch/text/actions/runs/4768069025/jobs/8476978109)) * [tests (3.8) / windows-job](https://hud.pytorch.org/pr/pytorch/text/2158#12933873403) ([gh](https://github.com/pytorch/text/actions/runs/4768069013/jobs/8476978269)) * [tests (3.9) / windows-job](https://hud.pytorch.org/pr/pytorch/text/2158#12933873751) ([gh](https://github.com/pytorch/text/actions/runs/4768069013/jobs/8476978542))

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[Nayef211]

Closing in favor of https://github.com/pytorch/text/pull/2166