fix: user flags parser (#19)

## 💌 Description

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## 🔗 Related issue

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Fixes: #13 

## 🏗️ Type of change

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- [ ] 📚 Examples/docs/tutorials
- [x] 🐛 Bug fix (non-breaking change which fixes an issue)
- [ ] 🥂 Improvement (non-breaking change which improves an existing
feature)
- [ ] 🚀 New feature (non-breaking change which adds functionality)
- [ ] 💥 Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] 🚨 Security fix
- [ ] ⬆️ Dependencies update

## ✅ Checklist

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- [x] I've read the [`Code of
Conduct`](https://github.com/raven-actions/actionlint/blob/main/.github/CODE_OF_CONDUCT.md)
document.
- [x] I've read the
[`Contributing`](https://github.com/raven-actions/actionlint/blob/main/.github/CONTRIBUTING.md)
guide.

action.yml

@@ -357,8 +357,10 @@ runs:
 
           // set user tool flags
           if(INPUT_FLAGS !== '') {
-            const userFlags = INPUT_FLAGS.split(' ').map(s => s.trim())
-            userFlags.forEach(flag => { toolFlags.push(flag) })
+            const userFlags = INPUT_FLAGS.match(/(?:[^\s"]+|"[^"]*")+/g)
+            userFlags.forEach(flag => {
+              toolFlags.push(flag.trim())
+            })
           }
 
           // set files