add test for correct position of extra-words and enhance detection_log

Add test for is correct position of `extra-words` according to `extra-phrases` that is present in rules.

if we find `extra-words` are in the right place then we set score to `100`.
And also show in `detection_log` why we increasing the score to keep track of this.

Signed-off-by: Alok Kumar <[email protected]>

Author: alok1304