[Console] Added getTerminalDimensions() with fix for osx/freebsd

Bug fix: yes
Feature addition: no
Backwards compatibility break: no
Fixes the following tickets: -
Todo: -
License of the code: MIT
Documentation PR: -

For non-windows systems, the Console component makes use of `stty -a` to grab the dimensions of the terminal when formatting exception output. The regex pattern assumes a string like the following:

`speed 38400 baud; rows 25; columns 80; line = 0;`

However on OSX (and FreeBSD) the pattern is different:

`speed 38400 baud; 25 rows; 80 columns;`

This patch adds a fix to match the correct pattern on darwin/freebsd systems, and consolidates the code in `getTerminalWidth()` and `getTerminalHeight()` into a general `getTerminalDimensions()` function. I've also taken the liberty of changing the curly brace regex delimiters to forward slashes for consistency with the rest of the codebase.