Fix string handling in hook

[Kiprey]

When the value recorded in the API log is '" ' "', ApiFuzz will make an error when executing the evaluate function. Because python recognizes the second single quote as an identifier, but that is actually data.

To prevent ApiFuzz from reporting errors and allow API Log to display value strings better, I escaped all non-alpha and non-digital characters into the form of '\xXX'.

And it works pretty well.

{'name':'location','value': '"\x0f\x18"','size' : 0x80,'cnt':0x1, 'data':[]}