Make essential Bazel packages publicly visible

This allows separate Bazel projects to reference Nomulus as an external
repository. They can then copy the []
directory structure into their own project and customize the Action
and Module lists for the GAE modules in their own deployment.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=136863886

java/google/registry/tools/BUILD

@@ -1,5 +1,5 @@
 package(
-    default_visibility = ["//java/google/registry:registry_project"],
+    default_visibility = ["//visibility:public"],
 )
 
 licenses(["notice"])  # Apache 2.0

java/google/registry/tools/params/BUILD

@@ -1,5 +1,5 @@
 package(
-    default_visibility = ["//java/google/registry:registry_project"],
+    default_visibility = ["//visibility:public"],
 )
 
 licenses(["notice"])  # Apache 2.0

java/google/registry/tools/server/BUILD

@@ -1,5 +1,5 @@
 package(
-    default_visibility = ["//java/google/registry:registry_project"],
+    default_visibility = ["//visibility:public"],
 )
 
 licenses(["notice"])  # Apache 2.0
@@ -7,9 +7,7 @@ licenses(["notice"])  # Apache 2.0
 
 java_library(
     name = "server",
-    srcs = glob([
-        "*.java",
-    ]),
+    srcs = glob(["*.java"]),
     deps = [
         "//java/com/google/common/annotations",
         "//java/com/google/common/base",