Update getbrew.sh to clone dungeonchurch-pyora repo and copy all files

[codegen-sh]

This PR updates the getbrew.sh script to clone the dungeonchurch-pyora repository and copy all files to the production 5etools site.

Changes:

• Instead of downloading a single JSON file, the script now clones the entire dungeonchurch-pyora repository
• Copies all JSON files to the homebrew directory
• Creates and populates the static and thirdparty directories with their respective content
• Sets appropriate permissions for all files
• Cleans up temporary files after completion

This ensures that all content from the dungeonchurch-pyora repository (including images and third-party content) is properly copied to the production 5etools site.

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