Add supported platforms to multi-platform dir layout distributions.

(cherry picked from commit ad2c20b)

Author: ansalond

mx.graalpython/suite.py

@@ -907,6 +907,13 @@
                     },
                 },
             },
+            "platforms": [
+                "linux-amd64",
+                "linux-aarch64",
+                "darwin-amd64",
+                "darwin-aarch64",
+                "windows-amd64",
+            ],
             "description": "Contains the JNI native lib, the C API and support libs.",
             "maven": False,
         },
@@ -1204,6 +1211,13 @@
                     },
                 },
             },
+            "platforms": [
+                "linux-amd64",
+                "linux-aarch64",
+                "darwin-amd64",
+                "darwin-aarch64",
+                "windows-amd64",
+            ],
             "maven": False,
         },