Auto detect windows factorio application path

[dbjorge]

Adds logic that attempts to guess the Factorio application path on Windows using a similar priority order to the one currently used on Linux:

1) Looks in the Steam installation folder (as indicated by the registry) for x64 and then x86 installations 2) Looks in Program Files for an x64 non-steam installation 3) Looks in Program Files (x86) for an x86 non-steam installation

Note that this involves taking a new dependency (jna-platform, https://github.com/java-native-access/jna) for the native registry access required to identify the steam installation folder. JNA is well-maintained and apache licensed.

The following scenarios were tested: Windows (Windows 10 Pro x64 10586.318):

• Installed via Steam with a non-default Steam folder
• Installed non-Steam (x64)
• No installs (falls back to the settings window as before)
• No installs with no Steam installation and no PROGRAMFILES(X86) (falls back to settings window, does not throw)

[dbjorge]

Repo seems dead/obsolete; abandoning PR