feat: Map.Broadcast(ushort, Func<Player, string>) overload.

[Num10ck]

Description

Added overload for Map.Broadcast(ushort, Func<Player, string>) to shorthand map-wide broadcasting.

What is the current behavior? (You can also link to an open issue here)
Map-wide broadcast with Player::DisplayNickname

What is the new behavior? (if this is a feature change)
Map-wide broadcast with Player::DisplayNickname

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

[Num10ck]

I think I should create a new branch for each PR

[louis1706]

I think I should create a new branch for each PR

Yeah that how i work to make multiple pr