feat: Spawning NPCs via RA adds them to the Npc.List

[Num10ck]

Description

Describe the changes
Added a transpiler for SpawnDummyCommand.Execute that adds a created NPC to the Npc.List (Player.Dictionary).

What is the current behavior? (You can also link to an open issue here)
Spawning an NPC via RA does not add it to the Npc.List (Player.Dictionary).

What is the new behavior? (if this is a feature change)
Spawning an NPC via RA adds it to the Npc.List (Player.Dictionary).

Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)
No.

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

[VALERA771]

I think it can be done easily

[Num10ck]

I think it can be done easily

It can be done by patching DummyUtils.SpawnDummy

[VALERA771]

We have IsNPC property in Player class which is basically incapsulates a method from base game that checks if player is NPC (fr?). So we can make this list depend on this property