Refactoring of the nix file. (#4494)

* Fix version number.

* Use the packages.x86_64-linux namespace.

* linux. prepend no longer required.

* Created build-shadps4 module.

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* Move dependency list to generator function parameters.

* Using call package to run builder.

* Pull in matching names and use inherit.

* Paths need to be wrapped in a "".

* Put , on the packages.

* And inherit does not need any , .

* Fixups.

* release and releaseWithDebugInfo now use the same builder.

* Set default pacakge to releaseWtihDebugInfo.

* Rename to build, moved down a directory and deleted modules/

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* Seperated devshell into shell.nix

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* Double ".nix"

* Nix Formatting.

* Included missing dependencies for shell.

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* Update Lock file.

* Removed old unused shell.nix.

* Collapse shell and build into flake.nix

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* Window bar patch

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* Removed unused patches list.

* As older nix shell was removed. Also remove old documentation.