Added CMakePresets.json file.

[j-horner]

Allows easy build with Visual Studio - CMake integration.
Debug and Release configurations added.
installRoot set to build/install/

[ensiform]

Curious why only x64 builds when the preferred for windows builds is 32?

[j-horner]

Partly personal habit of just building x64 and partly because I didn't realise 32 was the preferred.

I'll add x86 and some RelWithDebInfo configurations too.

[ensiform]

Partly personal habit of just building x64 and partly because I didn't realise 32 was the preferred.

I'll add x86 and some RelWithDebInfo configurations too.

Just because there are no mods for 64-bit out there, and many people still play old mods like JA+, 64-bit is unavailable for them.
Also, it adds no benefit to JKA engine to do so.

[xycaleth]

I'm on the fence about approving this since we've so far managed to not have any text editor or IDE specific files in the repo :/

[j-horner]

we've so far managed to not have any text editor or IDE specific files in the repo

That's understandable. I was going to close the PR but I saw that CMake added a new feature called Presets, which is basically the sort of JSON file except that it can be parsed by CMake directly and isn't IDE specific.

https://cmake.org/cmake/help/latest/manual/cmake-presets.7.html#build-preset

I added some x86 configurations and it seems to work well with VS code. VS only supports it under preview at the moment so I haven't test that. I'm not sure about other IDEs.

CMakeUserPresets.json is apparently intended for local developer settings so I added it to .gitignore and made a simple template for overriding CMAKE_INSTALL_PREFIX