feat: install pre-push hook by build script

Author: SergioRibera

.githooks/pre-push.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+cargo fmt --all
+leptosfmt .

build.rs

@@ -3,12 +3,17 @@ use std::{
     fs,
     fs::{DirEntry, Metadata},
     io::Write,
-    path::PathBuf,
+    path::{Path, PathBuf},
 };
 
 fn main() {
     println!("cargo:rerun-if-changed=extras");
 
+    // install pre-push hook
+    if !Path::new(".git/hooks/pre-push").exists() {
+        fs::hard_link(".githooks/pre-push.sh", ".git/hooks/pre-push").unwrap();
+    }
+
     let folders = fs::read_dir("extras").unwrap();
     if let Err(e) = fs::create_dir("src/extras") {
         if e.kind() != std::io::ErrorKind::AlreadyExists {