[bazel][robotpy] Add mirror for robotpy's wpiuil and wpinet libraries (#8062)

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GitOrigin-RevId: 92ea93d1b47a82667044bd0af05f7fdb34d2c2c2

shared/bazel/rules/robotpy/compatibility_select.bzl

@@ -0,0 +1,6 @@
+def robotpy_compatibility_select():
+    return select({
+        "@bazel_tools//src/conditions:windows": ["@platforms//:incompatible"],
+        "@rules_bzlmodrio_toolchains//constraints/is_systemcore:systemcore": ["@platforms//:incompatible"],
+        "//conditions:default": [],
+    })