Summary:
- The `hello_rust` example has been moved to `rust/baremetal` to better reflect its purpose as a bare-metal Rust application.
- The move also helps in organizing the Rust examples more clearly, separating them into categories based on their environment (bare-metal vs. non-bare-metal).
- A new directory structure has been created under `rust/baremetal`, and the `index.rst` file has been updated to describe the `baremetal` example in detail.
- The top-level `rust/index.rst` file has been created to include the new `rust/baremetal` directory in the toctree.
Impact:
- The new file structure and documentation improvements will help new contributors and users understand the purpose and setup of the example more easily.
- This change aligns the documentation with the actual codebase, enhancing the overall maintainability and clarity of the project.
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
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