feat(run-pre-commit): add script to run pre-commit in git folders and update documentation

bin/run-pre-commit

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+run-pre-commit() {
+    if [[ -z "$1" ]]; then echo "\$1/path is empty."; exit; fi
+    local git_folders=$(ls-git-folder "$1")
+
+    echo 'Run pre-commit in git folders...'
+    for git_folder in $git_folders; do
+        cd "$git_folder"
+        pre-commit run -a
+        cd -
+    done
+}