Move Bazel workspace root to project root

Moved MODULE.bazel, WORKSPACE.bazel, .bazelrc, WORKSPACE.bzlmod, and p4runtime_deps.bzl from proto/ to the repository root.
Added strip_import_prefix = "/proto" to proto_library targets in proto/BUILD.bazel to maintain correct import paths.
Updated bazel/example/using-workspace and bazel/example/using-bzlmod to depend on //proto:p4info_cc_proto and point to the repository root instead of proto/.
Created a root BUILD.bazel file exporting LICENSE and p4runtime_deps.bzl.

Fixes #571.

Author: google-labs-jules[bot]

proto/.bazelrc .bazelrcproto/.bazelrc renamed to .bazelrc

@@ -0,0 +1 @@
+exports_files(["LICENSE", "p4runtime_deps.bzl"])

BUILD.bazel

@@ -2,7 +2,7 @@ cc_binary(
   name = "hello_p4runtime",
   srcs = ["hello_p4runtime.cc"],
   deps = [
-    "@com_github_p4lang_p4runtime//:p4info_cc_proto",
+    "@com_github_p4lang_p4runtime//proto:p4info_cc_proto",
     "@com_google_protobuf//:protobuf",
   ]
 )

proto/MODULE.bazel MODULE.bazelproto/MODULE.bazel renamed to MODULE.bazel

@@ -7,12 +7,12 @@ bazel_dep(
 # of `local_repository` to load p4runtime.
 local_path_override(
     module_name = "p4runtime",
-    path = "../../../proto",
+    path = "../../..",
 )
 
 # git_override(
 #     module_name = "p4runtime",
-#     strip_prefix = "p4runtime-1.4.1/proto",
+#     strip_prefix = "p4runtime-1.4.1",
 #     urls = ["https://github.com/p4lang/p4runtime/archive/v1.4.1.tar.gz"],
 #     # sha256 = "<insert hash value here>",
 # )

proto/WORKSPACE.bazel WORKSPACE.bazelproto/WORKSPACE.bazel renamed to WORKSPACE.bazel

@@ -2,7 +2,7 @@ cc_binary(
   name = "hello_p4runtime",
   srcs = ["hello_p4runtime.cc"],
   deps = [
-    "@com_github_p4lang_p4runtime//:p4info_cc_proto",
+    "@com_github_p4lang_p4runtime//proto:p4info_cc_proto",
     "@com_google_protobuf//:protobuf",
   ]
 )

proto/WORKSPACE.bzlmod WORKSPACE.bzlmodproto/WORKSPACE.bzlmod renamed to WORKSPACE.bzlmod

@@ -5,12 +5,12 @@ load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 # of `local_repository` to load p4runtime.
 local_repository(
     name = "com_github_p4lang_p4runtime",
-    path = "../../../proto",
+    path = "../../..",
 )
 # http_archive(
 #     name = "com_github_p4lang_p4runtime",
 #     urls = ["https://github.com/p4lang/p4runtime/archive/v1.4.1.tar.gz"],
-#     strip_prefix = "p4runtime-1.4.1/proto",
+#     strip_prefix = "p4runtime-1.4.1",
 #     # sha256 = "<insert hash value here>",
 # )