Add Jump Nodes and future proof some interfaces

[jonnydgreen]

Important

This PR contains breaking changes. These are essential to ensure future compatibility of core Parley interfaces and ensure future extensiblity.

Changes

• Add Jump Node support
  • Implement feature
  • Tests
  • Fixup TODOs
  • Documentation
  • Update example repo
• Add ParleyContext and replace method using the Dictionary-based context
  • BREAKING CHANGE
• Add ParleyRunResult for greater flexibility in running Dialogue Sequences
  • BREAKING CHANGE
• Replaced Parley logs with just message building for better stack traces
• Detailed breaking changes and migration guide
• Renamed a few method and fixed a few minor issues
• Fixed issue where users were unable to customise the default balloon in settings
• Add async/await support to actions which are renamed to ParleyActionInterface.run
• Add async/await support to facts which are renamed to ParleyFactInterface.evaluate