Improve editor view model readability and fun call frequency

[dev-ant]

🔨 Refactoring Target

• EditorViewModel.kt activy_editor.xml too

📝 Description

• Modify var name to clearly mean it's uses readability
• Separate concern of function `soc
• Control line number update fun call frequency overhead

✅ Tasks

• refactor(editor): add live data var to encapsulate editor view model
• refactor(editor): separate statement changed fun to except handling and update
• fix(editor): modify query valid fun to ignore case

🎯 Expected Outcome after Refactoring

• Clear var name, more extensibility, encapsulate