Syntax improvements and tmLanguage restructure

# Syntax Additions
- Added Goto to labels
- Added force, all, alwayson to keywords
- Added ^, !, and # operators
- Modified regex for labels and vars

# tmLanguage
- Restructured using the [PlistJsonConverter](https://github.com/facelessuser/PlistJsonConverter) as this is the best practice and was recommended by most Sublime Text devs. 

See [first commit](https://github.com/denolfe/AutoHotkey-Package-Sublime-Text/commit/3afe834dff5e32309755a857400d8062cb89f65b) in order to diff.