Update to new Unity version add better support for new Input system

[aliakseikalosha]

Changes:

• Update to support unity 6.
• Update for easier handling the plugin, move Editor related classes to editor folder.
• Add support for better integration with new Input system.
• Add namespace to not collide with other classes in projects this plugin is imported.
• Small clean up of a project.
• Refactor to better fit with C# coding guide lines.
• Add Unity prefab with setup controller.
• Add demo scene.

For better use of a project I would suggest to add release with a unity export of a project like this:

You can find export from my PC in Zip file attached to pull request.
FPSMovementController.zip

[B0N3head]

Hey man, cheers for this.
Sorry it took so long for me to check this.
I'll have a look into this and merge it into a refactor I'm currently doing myself (a revive I've started recently over the past week).
The original code definitely wasn't the cleanest😅

Interested to see how you refactored it 🤙

[aliakseikalosha]

So you can look into it in at Files changed tab.
I have come to it because I didn't wanted to wright my own controller once again, done several for work projects, and you know to support the open source plugins.
No problem, like it was a 2 year old project I wasn't expecting answer, and if you are okay with my changes, you can merge it in.