Postgresql for Windows

[yoramdelangen]

I have added Postgresql support for Windows, it is almost ready for a PR. I used the prebuild binaries provided by EDB. https://www.enterprisedb.com/download-postgresql-binaries

Making the process very simple, but I ran into some questions:

• There is no license or contribution file in it, and without I receive an error after successfully build/compiling the extension. I could fix it by grabbing it from the Linux/MacOS source..
• Should I target the latest version of PostgreSQL (version 17.4 instead of 16.8)
• I use the prebuild binaries from EDB is that allowed to use or should I stick to the source of postgresql.org? edit: on the postgresql.org website they reference for prebuild binaries the EDB website.

Advanced users can also download a zip archive of the binaries, without the installer. This download is intended for users who wish to include Postgres as part of another application installer.

EDIT:
Copied the contents of the COPYRIGHT file into the config/source as text.

[crazywhalecc]

Using official pre-builds is acceptable if you can verify that the source is official or certified and that the pulled binaries work for at least VS2019 and VS2022.

But if the build process is simple (for example, a .sln is provided), I still recommend keeping the complete build process.

[yoramdelangen]

Yes, @crazywhalecc I have verified its official. The pulled zip contains all the compiled .lib files.
Documentation-wise the build process is kinda the same as Linux and MacOS, found this way a bit more confient. Maybe a later refactor, depending on what you want?

The PR should be ready to go, but 8.4 is breaking due to having a prefix. Locally compiling for 8.4 works perfectly fine, but in the GH actions it breaks