Permalinks Class Object Created

We must create the Object of Permalinks Class in the Header file.
Note: We must include it before including "output_handling_include.php"
file because we are using this object in "output_handling_include.php".
Output Replacement Function for Permalinks

Here we are passing the complete $output of website to the Permalinks
class function $permalink->getOutput($output), which returns the output
with links replaced with their corresponding Permalinks aka SEO URL
links.