feat: add loading and teleport logs

[lorenzo-ranciaffi]

Pull Request Description

Add logs (always) when:

• the player is teleporting
• the loading status changes
• a scene start being downloaded
• a scene finishes downloading
• a scene is started
• a scene is disposed

This addresses half of the issue #3428

Test Instructions

Test Steps

1. Go around by foot and teleport
2. Check that everything you did was specifically logged

Code Review Reference

Please review our Code Review Standards before submitting.

[github-actions]

Windows and Mac build successfull in Unity Cloud! You can find a link to the downloadable artifact below.

Name	Link
Commit	a835f54
Logs	https://github.com/decentraland/unity-explorer/actions/runs/13568256782
Download Windows	https://github.com/decentraland/unity-explorer/suites/34975973506/artifacts/2664023741
Download Windows S3	https://explorer-artifacts.decentraland.org/@dcl/unity-explorer/branch/feat/add-loading-logs/Decentraland_windows64.zip
Download Mac	https://github.com/decentraland/unity-explorer/suites/34975973506/artifacts/2663794485
Download Mac S3	https://explorer-artifacts.decentraland.org/@dcl/unity-explorer/branch/feat/add-loading-logs/Decentraland_macos.zip
Built on	2025-02-27T15:01:01Z

[DafGreco]

✔️ PR reviewed and approved by QA on both platforms following instructions playing both happy and un-happy path

Regressions for this ticket had been performed in order to verify that the normal flow is working as expected:

• ✅ Backpack and wearables in world
• ✅ Emotes in world and in backpack
• ✅ Teleport with map/coordinates/Jump In
• ✅Profile card
• ✅ Camera
• ✅Skybox
• ✅Settings

Example of the implementation:

1. <color=#BDB8AC>[ALWAYS]: Trying to teleport to (-102, -97). Attempt
   2 and 3. <color=#BDB8AC>[ALWAYS]: Current loading stage: Init
   <color=#BDB8AC>[ALWAYS]: Current loading stage: UnloadCacheChecking
   <color=#BDB8AC>[ALWAYS]: Current loading stage: PlayerTeleporting
2. <color=#BDB8AC>[ALWAYS]: Current loading stage: Completed