Added new class of job - bone burying
Made the Task List item functional
Overhauled the dialogues of all of the applicable employers to be more authentic to 2009
Players must now return to the employer who gave them the job to turn it in
Added development command ::clearjob to clear the player's current job
Unified kotlin and java into just src/main
Unified the rs09 and core packages
Took all content out of the core package, and placed it into the new content package
Reorganised all source code relating to content to be easier to find and explore