- Added error handling and improved variable handling in `generate-pr-plugin.sh`.
- Updated placeholder values in the generated plugin file for clarity.
- Enhanced the UI in `Plugins.page` to indicate that the page is modified for PR testing.
- Updated `generate-pr-plugin.sh` to include a new parameter for TXZ URL and modified usage instructions.
- Enhanced the GitHub Actions workflow to upload the TXZ file to R2 and generate the corresponding public URL.
- Improved installation instructions in the PR comment to provide direct download links for the PLG and TXZ files.
- Modified the sed command in `generate-pr-plugin.sh` to support both Linux and macOS environments.
- Updated the `pr-plugin-build.yml` workflow documentation to include a step for creating the necessary plugin directory.
- Changed the local path for the downloaded tarball to include the 'webgui-pr' directory.
- Updated the cleanup command to remove the correct plugin file based on the new path structure.
- Introduced a new script `generate-pr-plugin.sh` to automate the creation of Unraid PR plugin files.
- Added a GitHub Actions workflow `pr-plugin-build.yml` to build and package the plugin when changes are made to the `emhttp` directory.
- The workflow includes steps for checking out code, generating versioning, creating a tarball, and uploading the plugin artifact for PR testing.
