commit images and add them to the same merge request

• only process .pro, .gro and .quo files and not imgs
• get the corresponding images out of the file which is being added to content.js
• copy the images into the repo directory into imgs/
• commit and push everything and create one merge request
• look in watchdir for unprocessed data once the bot is started in case some files were added while the bot was not running
• move processed files to a specific dir instead of removing them (implemented but not yet working)
• processing multiple images is not yet working (probably the regex doesn't work as expected or replacing of the array syntax isn't working correctly)
• if images are missing, process the rest anyway but add a warning about the missing element to the MR
• even after a successful push and MR creation it still triggers Status.pushFailed

implements #1 (closed)