Prepare for githooks configuration on Windows

Move build/scripts/workspace-status.sh to
tools/unix/workspace-status.sh.

.bazelrc

@@ -74,7 +74,7 @@ build:asan --test_env=ASAN_OPTIONS=abort_on_error=true
 #
 # Linux and macOS
 #
-build:unix --workspace_status_command=./build/scripts/workspace-status.sh
+build:unix --workspace_status_command=./tools/unix/workspace-status.sh
 
 build:unix --cxxopt='-std=c++20' --host_cxxopt='-std=c++20'
 build:unix --cxxopt='-stdlib=libc++' --host_cxxopt='-stdlib=libc++'
@@ -124,6 +124,7 @@ build:linux --force_pic
 
 # See https://bazel.build/configure/windows#symlink
 startup --windows_enable_symlinks
+build:windows --workspace_status_command=./tools/windows/workspace-status.cmd
 build:windows --enable_runfiles
 # We use LLVM's MSVC-compatible compiler driver to compile our code on Windows,
 # as opposed to using MSVC directly. This enables us to use the "same" compiler