docs: add Japanese README file

I created Japanese translated README.

update notify

add a new file to use MinerU

fix(pdf_extract_kit): specify utf-8 encoding when reading model configEnsure the model configuration file is read with utf-8 encoding to support
non-ASCII characters and prevent potential encoding errors.

Specify utf-8 encoding when opening the configuration file to ensure
compatibility with files containing non-ASCII characters, avoiding potentialencoding errors.

Update the installation guide in README_zh-CN.md to clarify that the pre-compiled
whl packages are only compatible with 64-bit systems running Python 3.10 on
windows/linux/macOS. Add a note warning that the packages are not compatible with
32-bit systems or non-mac ARM platforms, and suggest manual compilation for
unsupported systems.

feat(readme): add instructions for config file setup and model weight path configurationUpdate the README_zh-CN.md to include detailed steps for copying the
configuration template to the user directory and configuring the 'models-dir'
to point to the downloaded model weight files. This ensures users have a clear
guideline on setting up the configuration file correctly, preventing program
failures due to missing model files.

fix(magic-pdf): add default values and improve warning logs for config optionsEnsure that 'temp-output-dir', 'models-dir', and 'device-mode' have sensible default
values in case they are not specified in the config file.