Moving the RemoteWorker into tools/remote directory.

This is because I want to add another remote execution related tool, the remote_client, which will use the Remote Execution API to fetch blobs from a remote cache. I will use this tool as part of end-to-end tests for remote execution.

TESTED=remote integration tests, presubmit
RELNOTES: None
PiperOrigin-RevId: 177995895
diff --git a/src/BUILD b/src/BUILD
index de49f41..31a6228 100644
--- a/src/BUILD
+++ b/src/BUILD
@@ -17,7 +17,7 @@
     }),
     visibility = [
         "//src/test/java:__pkg__",
-        "//src/tools/remote_worker:__subpackages__",
+        "//src/tools/remote:__subpackages__",
     ],
 )
 
@@ -379,7 +379,7 @@
         "//src/tools/xcode/stdredirect:srcs",
         "//src/tools/xcode/swiftstdlibtoolwrapper:srcs",
         "//src/tools/xcode-common:srcs",
-        "//src/tools/remote_worker:srcs",
+        "//src/tools/remote:srcs",
         "//tools/osx:srcs",
     ],
     visibility = ["//:__pkg__"],