[executorch][android] Add Runtime.java to centralize native library l…

[LefterisXefteris]

This pull request addresses #10439 by introducing a Runtime.java class to centralize the loading of the native libexecutorch.so library on Android.

What’s Included
• Added Runtime.java in org.pytorch.executorch with a static loader block
• Updated NativePeer.java and LlmModule.java to defer initialization to Runtime.isInitialized()
• Added RuntimeTest.java to verify proper initialization

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/10672

• 📄 Preview Python docs built from this PR

Note: Links to docs will display an error until the docs builds have been completed.

❌ 3 New Failures

As of commit a6486e6 with merge base 94f7b10 ():

NEW FAILURES - The following jobs have failed:

• Check Labels / Check labels (gh)
  RuntimeError: Error checking labels: PR does not have required labels
• Lint / android-java-format / linux-job (gh)
  RuntimeError: Command docker exec -t b2e8568b820d19f222fa566d5033364ebb23ea69912fb9a15e99de527471da01 /exec failed with exit code 1
• pull / android / build-llm-demo / linux-job (gh)
  RuntimeError: Command docker exec -t 18b861d28f25892b8e27f9b2e3165c56ec7c868f5b9d93aee7ee6355cd0c0008 /exec failed with exit code 1

This comment was automatically generated by Dr. CI and updates every 15 minutes.

[facebook-github-bot]

Hi @LefterisXefteris!

Thank you for your pull request and welcome to our community.

Action Required

In order to merge any pull request (code, docs, etc.), we require contributors to sign our Contributor License Agreement, and we don't seem to have one on file for you.

Process

In order for us to review and merge your suggested changes, please sign at https://code.facebook.com/cla. If you are contributing on behalf of someone else (eg your employer), the individual CLA may not be sufficient and your employer may need to sign the corporate CLA.

Once the CLA is signed, our tooling will perform checks and validations. Afterwards, the pull request will be tagged with CLA signed. The tagging process may take up to 1 hour after signing. Please give it that time before contacting us about it.

If you have received this in error or have any questions, please contact us at [email protected]. Thanks!

[github-actions]

This PR needs a release notes: label

If your changes are user facing and intended to be a part of release notes, please use a label starting with release notes:.

If not, please add the topic: not user facing label.

To add a label, you can comment to pytorchbot, for example
@pytorchbot label "topic: not user facing"

For more information, see
https://github.com/pytorch/pytorch/wiki/PyTorch-AutoLabel-Bot#why-categorize-for-release-notes-and-how-does-it-work.

[kirklandsign]

Hi @LefterisXefteris could you please sign the CLA?

[kirklandsign]

I didn't see NativePeer.java updated.

[kirklandsign]

We don't have implementation yet. Please don't add that.

[kirklandsign]

Please add a license template