feat: ECS7 update pointer events component with a new approach

[D4rWiNSS]

Context

In order to have a better understanding of why are we changing the way that pointer event result works you should go to this issue: decentraland/sdk#352

We have defined a new way to retrieve the result of the pointer event and we need to implement it.

This is the first step going forward decentraland/sdk#358.

The reason behind implementing this approach instead of the complete Append decentraland/sdk#358. This is because of the time that we have to achieve feature parity with ECS6. This is an intermediary approach that won't break the API when we implement the Append to the CRDT message

What does this PR change?

This PR is the second part of

• Removes the old PointerEvents components and ( OnPointerUp and OnPointerDown) and implements a generic PointerEvent component.

This component will contain an array of all the pointer-events specified by the user.

Know issues

PointerEventUp is not working as expected since the hover text is not appearing correctly. This is happening already so it is not related to this PR

How to test the changes?

1.- Download the scene https://github.com/decentraland/ecs7-template and use the following branch: feat/pointer-event-test 2.- Follow the instructions in the md of the repo and install this SDK version npm install "https://sdk-team-cdn.decentraland.org/@dcl/js-sdk-toolchain/branch/feat/update-pointer-event-result/dcl-sdk-7.0.0-2978388596.commit-be4470d.tgz" 3.- Start the scene with dcl start 4.- Use this URL: http://127.0.0.1:8000/?position=0%2C0&ENABLE_ECS7&renderer-branch=feat/update-pointer-event-result-component&kernel-branch=main&SCENE_DEBUG_PANEL=&realm=v1%7E127.0.0.1%3A8000 5.- Change the code with differents pointers events and differents buttons to see if everything works as expected 6.- Test those two function isPointerEventActive and wasEntityClicked

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