revise the clang-tools-manager/README for better comprehension

[shenxianpeng]

The rust-based clang-tools-manager is out in the wild now. I'm not sure if it is recommended outside of a CI context though. It uses the following priority to source the clang tools' binaries:

1. PyPI releases
2. system-native package managers (apt, winget, dnf, homebrew, etc)
3. static binaries

And it doesn't currently support clang-query at all, only clang-format and clang-tidy.

- **[clang-tools-manager](https://github.com/cpp-linter/cpp-linter-rs/tree/main/clang-tools-manager)**
  - use pre-built binaries with cargo-binstall:
    ```sh
    cargo binstall clang-tools-manager
    clang-tools -h
    ```
  - build from source code with cargo
    ```sh
    cargo install clang-tools-manager --locked --features bin
    clang-tools -h
    ```

• clang-tools-manager
  • use pre-built binaries with cargo-binstall:

    cargo binstall clang-tools-manager
    clang-tools -h

  • build from source code with cargo

    cargo install clang-tools-manager --locked --features bin
    clang-tools -h

I suppose I should revise the README for better comprehension first.

Originally posted by @2bndy5 in cpp-linter/.github#82 (comment)

[2bndy5]

Could use some badges too. And a minimal CLI explanation.