feat: new input system upgrade [MTT-8681]

[fernando-cortez]

Description

This PR upgrades the project to use the New Input System. Compatibility mode with the previous version has been disabled.
A PlayerActions map has been created, and all previous actions have been remapped to this asset.
As a bonus, the tooltip feature is restored in the character select screen.

Issue Number(s)

MTT-8681
MTT-3578

Contribution checklist

• [ N/A ] Tests have been added for boss room and/or utilities pack
• Release notes have been added to the project changelog file and/or package changelog file
• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• JIRA ticket ID is in the PR title or at least one commit message
• Include the ticket ID number within the body message of the PR to create a hyperlink
• [ N/A ] An Index entry has been added in readme.md if applicable

[FabianStoll]

Tested on windows with keyboard and mouse.
All input actions seem to work as expected except mouse wheel rotation which is not zooming in or out.

[fernando-cortez]

Tested on windows with keyboard and mouse. All input actions seem to work as expected except mouse wheel rotation which is not zooming in or out.

Should be addressed now, on desktop and mobile!

[FabianStoll]

LGTM on Windows, thanks!

I tried to build and test on Android but get a build error.
Not sure if related to new input system and if it is worth investigating:

Type '[Unity.RenderPipelines.Core.Runtime]UnityEngine.Rendering.DebugActionDesc' has an extra field 'buttonAction' of type 'UnityEngine.InputSystem.InputAction' in the player and thus can't be serialized (expected 'repeatMode' of type 'UnityEngine.Rendering.DebugActionRepeatMode') UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

The base branch was changed.