v1.1.0

New features:

• Now only support Unity 6 or higher, but planned to release a version for older Unity version in the future.
• Adds a bash script to automatically link this submodule main folder to the current Unity project's Assets folder.
• Adds assembly definition files for editor and runtime environments.
• Adds a package manifest file to make this submodule a custom package, but might not work for the time being.

Refactors:

• Update some API calls in scripts with new version from Unity 6.

Chores:

• Move the main folder to the repository root.
• Move the read me file and reference images into a hidden .github folder.
• Update the read me file with new instructions for the new automated script.

@constance012