Add script for running nightly rustfmt on all workspaces (#23244)

* Add script for running nightly rustfmt on all workspaces

* invalidate ci cache

scripts/cargo-fmt.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+here="$(dirname "$0")"
+cargo="$(readlink -f "${here}/../cargo")"
+
+if [[ -z $cargo ]]; then
+  >&2 echo "Failed to find cargo. Mac readlink doesn't support -f. Consider switching
+  to gnu readlink with 'brew install coreutils' and then symlink greadlink as
+  /usr/local/bin/readlink."
+  exit 1
+fi
+
+set -ex
+
+"$cargo" nightly fmt --all
+(cd programs/bpf && "$cargo" nightly fmt --all)
+(cd sdk/cargo-build-bpf/tests/crates/fail && "$cargo" nightly fmt --all)
+(cd sdk/cargo-build-bpf/tests/crates/noop && "$cargo" nightly fmt --all)
+(cd storage-bigtable/build-proto && "$cargo" nightly fmt --all)
+(cd web3.js/test/fixtures/noop-program && "$cargo" nightly fmt --all)