[Example] ggml: add phi-3-mini test

[dm4]

• Add phi-3-mini test.
• Temporary use b2734 assets for testing. Will revert it after it's released.

[juntao]

Hello, I am a code review bot on flows.network. Here are my reviews of code commits in this PR.

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Commit 7d5535aa26be037074536a663626d13b02277395

Key Changes:

1. Added a new test scenario called "Phi 3 Mini" which involves setting up a specific environment for the test, including downloading necessary files, building the project, and running it using specific configurations.
2. Created new files related to the test:
   • wasmedge-ggml/test/phi-3-mini/Cargo.toml
   • wasmedge-ggml/test/phi-3-mini/README.md
   • wasmedge-ggml/test/phi-3-mini/src/main.rs
   • wasmedge-ggml/test/phi-3-mini/wasmedge-ggml-phi-3-mini.wasm
3. Updated the workflow file llama.yml to include the new Phi 3 Mini test as part of the build process.

Potential Problems:

1. The patch introduces a new test scenario, which means there might be dependencies or configurations required to run this test that are not explicitly mentioned in the patch. It's crucial to ensure that the environment setup for this test is well-documented and clear for anyone who wants to run or contribute to it.
2. The changes seem extensive, so there might be a need for additional testing to ensure that the new test does not introduce any regressions or conflicts with existing functionality.
3. It's essential to verify that the test scenario aligns with the project's goals and that the changes are necessary and beneficial before merging the pull request.