INTERLIS Import / Export logs with xtf file instead of temp folder

[sjib]

Description :
Option to save logs with xtf file instead of temp folder

Related issues :

• logs with xtf file instead of temp folder QGEP/qgepqwat2ili#77
• INTERLIS Export - Logs are not always there where they should be QGEP/qgepqwat2ili#82

Useful links :

Related pull requests :

qgepqwatili:

• add ability to save logs next to input/output file in the GUI QGEP/qgepqwat2ili#79
• fix #82: save logs next to file checkbox not reliable #86

qgepplugin:

• [qgepqwat2ili] add ability to save logs next to input/output file in the GUI QGEP/qgepplugin#71