Add build targets (wasm etc)

[nhh]

I want to know which engine can be compiled to wasm.

[ivankra]

I have "Platform" field for some engines to indicate which non-native runtime platforms they target - like .NET, JVM, and Wasm among them. It's just currently a bit hidden on the main table page in "..." > "Select columns" > "Platform", because I'm not sure it's bringing enough value to justify consuming more horizontal space. For Wasm, you could just search the table for "WebAssembly", for JVM you could look for Java, etc.

I'd guess most of the engines written at least in C/C++ and LLVM languages can actually be made to run on Wasm, with some small to moderate amount of effort and patching, and without JIT of course. Eventually, it'd be nice to offer Wasm builds as an alternative to native amd64/arm64 builds and benchmark them with some common Wasm runtimes, but it's low on my priority considering the effort required.