Fixed localizations

[sadasant]

Fixed localization on package.json sections: capabilities, contributes.walkthroughs, contributes.commands and contributes.debuggers. As well as the localizations on the exceptions thrown if the extension fails to activate and the localization on the messages for deprecated features.

My approach was as follows:

• In package.json, I used [a-zA-Z]+ [a-zA-Z]+ to find for pseudo-english strings.
• Outside of package.json, I used "[a-zA-Z]+ [a-zA-Z]+ to search. Excluding files: *.d.ts,*test.ts,localize.ts,testData.ts.
  • Inevitably found many results in the comments, but I omitted those.
• Ensured that no unnecessary duplications existed by: Removing all the keys on package.nls.json, then running sort package.nls.json | uniq -cd to find the duplicated values. There are some, but they seem not necessary to optimize to me.
• Proceeded to read each one of the localizations I was adding to find sensitive content that should be excluded form translations. Keeping in mind that our translators are very technically capable.

I believe there are no other places to localize now.

Fixes #10624

Feedback always appreciated!