Add case-sensitive to "better-comments.tags" setting

[Fabioni]

Hey, I would like to specify case-sensitive in the settings for a specific tag, e.g.:

"tag": "todo",
"color": "#FF8C00",
"strikethrough": false,
"underline": false,
"backgroundColor": "transparent",
"bold": false,
"italic": false,
"case-sensitive": true