Add lib functions earlier so that they are visible in top-level macros

[asterite]

Fixes #12395

CI will fail because of #12840

It turns out this was really easy to do. The previous times I tried it I got failures and I didn't want to spend time debugging it. The failures were because the External was created without args initially, and then they were added. I missed that... but once I realized that was the problem fixing it was very easy.

Note: lib types won't be solved at the top-level because that happens later on. The reason for that is to not require forward declarations. But I think that even without resolved types this is useful.

[sol-vin]

I literally could not be happier about this!

[asterite]

@sol-vin that's great to hear! If you want you can compile a compiler from this branch and try it out. Maybe this works but we'll still be missing things to make this usable.

[sol-vin]

@asterite My main dev computer is Windows right now, so I use the scoop packages to make everything work. I might still have a Linux box kicking around I can try this on with raylib-cr. IDK how easy Crystal is to compile on Windows.

[asterite]

Oh, no worries then. Thanks!

[straight-shoota]

Just saying... https://learn.microsoft.com/en-us/windows/wsl/install

But yeah, building the compiler on Windows is not exactly a walk in the park. That's mostly due to the lib dependencies (you need LLVM with llvm-config for example). But given that it should be just make -f Makefile.win crystal.

You can easily wait for this to be merged into master and install the nightly build from scoop.