Added WASM libs for raylib and raygui. Added them to the foreign import blocks, with optional ways to override them. These overrides can be used to use alterantive libs when using for example emscripten.

vendor/raylib/raygui.odin

@@ -3,6 +3,7 @@ package raylib
 import "core:c"
 
 RAYGUI_SHARED :: #config(RAYGUI_SHARED, false)
+RAYGUI_WASM_LIB :: #config(RAYGUI_WASM_LIB, "wasm/libraygui.a")
 
 when ODIN_OS == .Windows {
 	foreign import lib {
@@ -22,6 +23,10 @@ when ODIN_OS == .Windows {
 			"macos/libraygui.dylib" when RAYGUI_SHARED else "macos/libraygui.a",
 		}
 	}
+} else when ODIN_ARCH == .wasm32 || ODIN_ARCH == .wasm64p32 {
+	foreign import lib {
+		RAYGUI_WASM_LIB,
+	}
 } else {
 	foreign import lib "system:raygui"
 }