Merge pull request hdl#313 from hzeller/20240403-fix-pdk-namespace

Fix namespace of PdkInfoProto to better reflect the intent.

Author: hzeller

pdk/proto/pdk_info.proto

@@ -1,6 +1,6 @@
 syntax = "proto2";
 
-package bazel_rules_hdl.pdk;
+package hdl.pdk;
 
 message PdkInfoProto {
   repeated string cell_lef_paths = 1;