* feat(plugin_decoder): add support for internationalized readme files
- Introduced the AvailableI18nReadme method in the PluginDecoder interface to retrieve available readme files in multiple languages.
- Implemented the method in FSPluginDecoder and ZipPluginDecoder to read localized readme files from the filesystem and zip archives.
- Enhanced UnixPluginDecoder to handle readme files in a structured manner, including support for reading from a dedicated "readme" directory.
- Added unit tests to verify the functionality of the AvailableI18nReadme method and ensure correct retrieval of localized readme content.
* feat(plugin): add support for multilingual README generation
- Introduced functionality to create README files in multiple languages (Simplified Chinese, Japanese, Portuguese) based on user selection.
- Enhanced the profile management to include options for enabling internationalized README and selecting languages.
- Added new language choice structure to manage language options and their selection state.
- Implemented rendering and writing of language-specific README files during plugin creation.
- Included new README template files for each supported language.
* feat(plugin): add README command and list functionality
- Introduced a new `readme` command to the plugin CLI for managing README files.
- Added `list` subcommand to display available README languages for a specified plugin path.
- Implemented functionality to read and list supported README languages in a tabular format.
- Enhanced error handling for plugin file reading and decoding processes.
* refactor(plugin_packager): update Assets method to use OS-independent path separator
- Modified the Assets method in FSPluginDecoder and PluginDecoderHelper to accept a separator argument, ensuring compatibility across different operating systems.
- Updated the Assets method in ZipPluginDecoder to use '/' as the separator for zip files, addressing issue #166.
- Improved code readability by adjusting formatting in the ZipPluginDecoder struct.
* fix: add tests
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