Verbatim Interpolated String Extension For Visual Studio

A tiny extension that turns a string literal into verbatim @"" or interpolated string $"" as you type.

@ is added when:

• You type single backslash + space
• You type double quotes + space
• Paste a string with backslashes into an empty string

@ is not added when:

• The edited string contains an escaped character, such as '\n'.

$ is added when:

• You type {}_ (consecutive curly braces followed by a space)
• You type {_} (add a space between consecutive curly braces)