Created a new file for pgr_path_h structure

[vidhan13j07]

Fixes cvvergara#112.

Changes proposed in this pull request:

• Created a file for pgr_path_t.h
• Moved the structure pgr_path_t from pgr_types.h to pgr_path_t.h

[cvvergara]

@vidhan13j07
Looks like that type is not used any more, Can you try without the file:

rm include/c_types/pgr_path_t.h
<compile locally>

if it works locally then do

git rm nclude/c_types/pgr_path_t.h
git push

if it does not work locally do: (this will revert any changes)

git stash

[vidhan13j07]

@cvvergara The build was successful after removing pgr_path_t.h.

[cvvergara]

Cool one thing less :)

[cvvergara]

file name changed

[vidhan13j07]

I have removed this file altogether in my next commit since pgr_path_t is not used anywhere.