Feature request: Implement more powerful compression options

[LorenDB]

I'm porting a project that previously used an NSIS installer to be packaged with MSIX instead. Unfortunately, the installer size has doubled from ~350 MB to ~700 MB. I would like to see an option to allow more powerful compression when building an MSIX package. I'd suggest adding support for 7-Zip's LZMA2 algorithm, as it provides much better compression than the ZIP format (which is what is currently used IIUC).

Additionally, I'd like to at least see an option to increase compression intensity; while some projects can afford to use more space to reduce the decompression CPU time, my use case swings the other way.