AssassinK786/ungoogled-chromium-debian ? reverse-engineered prompt

Build me a working Debian packaging repository for ungoogled chromium that can be built straight from git.

I want the package files to support the newer Debian and Ubuntu releases, especially Debian Sid, Ubuntu Jammy, and Ubuntu Lunar, and I want the build flow to be simple enough that someone can clone the repo, initialize any submodules, run the setup step, and then build a binary package without having to figure out missing pieces.

Please make sure the packaging is organized for a single unified set of files, and that it follows the normal Debian build process well enough to work on a clean machine. If anything depends on current upstream instructions, look up the latest docs online if you need to.

Also make the repository sensible for future maintainers, with clear packaging files and anything needed so the build does not break immediately when someone follows the README steps.