feat: New Player Changed Room & Changed Zone events

[MS-crew]

Description

Describe the changes
Added RoomChanged and ZoneChanged events triggered when a player changes rooms or zones.

What is the current behavior? (You can also link to an open issue here)
The Exiled does not provide built-in events for tracking room/zone changes.
Plugins must manually track player Rooms or Zones to detect these changes.

What is the new behavior? (if this is a feature change)
Plugins can now subscribe to:

• Player.RoomChanged: Fires when a player enters a new RoomIdentifier.
• Player.ZoneChanged: Fires when a player enters a new ZoneType.
  Both events include Player and old room , new room or old zone new zone data(zones just for changed zone event ) .

Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)
❌ No. This is a non-breaking change that adds new features without modifying existing behavior.

Other information:

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentations

Submission checklist

• I have checked the project can be compiled
• I have tested my changes and it worked as expected

Patches (if there are any changes related to Harmony patches)

• I have checked no IL patching errors in the console

Other

• Still requires more testing