Implement Ctrl+S or Command+S for save draft (#1628)

* Implement Ctrl+S or Command+S for save draft

* rename

* add Typecho.savePost

* fix upload file size

* add new uploader

* replace new uploader

* fix textarea change

* fix preview

* refactor post edit

* fix issue

* fix page edit

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Co-authored-by: joyqi <joyqi@segmentfault.com>
Co-authored-by: joyqi <magike.net@gmail.com>

tools/package.json

@@ -19,7 +19,7 @@
   "dependencies": {
     "@picocss/pico": "^1.5.0",
     "chalk": "^4.0.0",
-    "node-sass": "^6.0.1",
+    "node-sass": "^9.0.0",
     "sprite-magic-importer": "^1.6.2",
     "uglify-js": "^3.11.6"
   }