Extends the multi line condition to over other control flow
expressions, it now covers: `if`, `if let`, `for`, `loop`, `while`,
`while let` and `match`.
Refs: #3029
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
This improves the formatting and reading of code avoiding the
condition expression to be rewrite, if it goes multi line.
Fixes: #3029.
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>