Powershell syntax highlight suggestion: string -format, the {0} should be highlighted

[aeschli]

From @DoTheEvo on November 1, 2017 17:3

many ways to concatenate strings in powershell.

Relatively newer but becoming popular one is format string where {0} {1} {2}.. are treated as placeholders inside string.

Would be great if they would be highlighted as such.

Copied from original issue: microsoft/vscode#37425

[rkeithhill]

Sorry to redirect you again but can you post this on the EditorSyntax repo? That is the repo that handles syntax highlighting for all editors, including VSCode - https://github.com/powershell/editorsyntax