New line in strings

Hi!

I'm seeing that new lines using `\n` is not supported at the moment.

We are trying to emit an alert adding a new line and the only way to do it is just adding a new line in the middle of the variable, leaving the code unaligned and breaking the color formatting in Chronograf :/

Is there any way of adding a "new line character" on strings?

No files or tests are named in the issue. Start by reproducing the alert-string case and tracing how Kapacitor parses or emits string escape sequences. Done means a \n in a string produces a newline in the emitted alert without requiring a literal line break or disrupting formatting.

Written by the indexing model from the issue text.