Added in CLI arg support

[geekbozu]

Added autotest From CLI
Added in a force load ROM from CLI option (this is broken)

Changed openJSONConfig to Int type. Use, Check if file was properly opened programmatically.

[adriweb]

Cool ; here is some feedback before merging:

• Delete the //#include <qdir.h> line
• AFAIK, you can replace all instances of QCoreApplication::translate("main", foo); by a simpler tr(foo) ; edit: nope, nvm
• Can't the sleep(1) rather be QThread::sleep(1)?
• Technically the CEMUOpts type would be better as CEmuOpts :P
• Rename TestFile to AutotesterFile?
• The diff shows a few new empty lines (here, here, here, and here), you can delete those
• Actually, I don't think there should be a suppressTestDialog thing ; indeed if we launch CEmu with a test config file, we probably want to know about the outcome. What I can do however, is simply not show the dialog in case of 0 tests to be done (but I'll take care of that later, don't worry about it in this PR).

[jacobly0]

Also #include "QString" should be #include <QString>.

[geekbozu]

Updated PR with suggestions.
Added in a seperate flag for suppressTestDialog