make tests cross-platform

Author: ShaharMS

.github/workflows/main.yml

@@ -7,7 +7,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        haxe-version: [4.2.5]
+        haxe-version: [4.2.5, 4.3.7]
+        target: [interp, neko, hl, js, cpp, jvm, python, lua, php, cs, java, cppia]
         include:
           - target: interp
             flag: --interp