Update zh_Hans Localizations. And more.

[megabitsenmzq]

1. Add new Localizations.

• "Alert.CancelInstall.Runtimes.Title"
• "Alert.DeletePlatform.PrimaryButton"
• "Alert.DeletePlatform.Title"
• "Perform post-install steps"
• "Error"
• "Open In Rosetta"
• "Platforms"
• "PlatformsList.Title"

2. Fix some old Localizations. All contains "前置步骤" -> "安装后准备步骤".

3. Remove old or useless Localizations.

4. Create a file "String+.swift" to remove preview strings from localizations. Make it easier to work on translation.

5. Use Text(verbatim: ) to remove preview strings from localizations. Make it easier to work on translation.

[megabitsenmzq]

Got it! I will try it this weekend.

[megabitsenmzq]

I found that although Text support initializes with init(verbatim: ), Picker or TextField don't have alternatives for this.

[megabitsenmzq]

@MattKiazyk I removed "String+" and modified all Texts to use init(verbatim: ). For "Picker" and "TextField" and "Button" which are not supporting init(verbatim: ), I gave them labels with Texts. Please check it out.

[MattKiazyk]

@megabitsenmzq thanks so much for those changes - can you just rebase and I'll get that merged in

[megabitsenmzq]

@megabitsenmzq thanks so much for those changes - can you just rebase and I'll get that merged in

Done!