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

Project import generated by Copybara.

GitOrigin-RevId: 92ea93d1b47a82667044bd0af05f7fdb34d2c2c2

shared/bazel/rules/robotpy/hack_pkgcfgs.py

@@ -0,0 +1,19 @@
+import os
+import pathlib
+from typing import List
+
+
+def hack_pkgconfig(pkgcfgs: List[pathlib.Path]):
+    """
+    This will place the given files in the PKG_CONFIG_PATH in such a way that will trick
+    semiwrap into thinking the libraries have been installed
+    """
+
+    pkg_config_paths = os.environ.get("PKG_CONFIG_PATH", "").split(os.pathsep)
+
+    if pkgcfgs:
+        for pc in pkgcfgs:
+            # pkg_config_paths.append(str(pc.parent.absolute()))
+            pkg_config_paths.append(str(pc.parent))
+
+    os.environ["PKG_CONFIG_PATH"] = os.pathsep.join(pkg_config_paths)