fix: restore accidentally deleted pre-commit hook

Author: kevin-y-ang

common/git-hooks/pre-commit

@@ -0,0 +1,9 @@
+#!/bin/sh
+# Called by "git commit" with no arguments.  The hook should
+# exit with non-zero status after issuing an appropriate message if
+# it wants to stop the commit.
+
+# Invoke the "rush prettier" custom command to reformat files whenever they
+# are committed. The command is defined in common/config/rush/command-line.json
+# and uses the "rush-prettier" autoinstaller.
+node common/scripts/install-run-rush.js prettier || exit $?