fix(jsonc-parser): do not trim empty lines by JSONC formatter

[ma-zal]

Issue

JSONC formatter is removing all empty lines in documents.

Root cause

Lib node-jsonc-parser, method format(). There was similar issue in VS Code, which has been already solved by adding option keepLines into this lib.

Solution

Upgrade node-jsonc-parser and set keepLines flag.

Testing

Updated extension tested on my local machine in VS Code. Works.

Relates links

• [json] formatter should keep empty lines microsoft/vscode#23260
• An additional parameter keepLines has been added into the formatting options which allows to keep the original line formatting microsoft/node-jsonc-parser#66

[dominikkadera]

Just please fix the blank characters in the CHANGELOG.md, I've left there a comment -- currently, they break the markdown 😅

Otherwise, it's pretty clear 😁

[dominikkadera]

Perfect, looking great now, thanks 😁