Refactor CPlayerManager

[Pirulax]

It was a very outdated code.
Also, I can't belive we've used it like this, its horrible.. Heap allocating and copying vectors, and maps for every packet?
This PR fixes it all! At once. (Coudnt really break it into more PRs).

Features:

• Added static BroadcastIf - Send the packet only to a player for which predicate is true
• BroadcastJoinedIf - A member function that uses the internally stored and optimized m_JoinedByBitStreamVer for BroadcastIf
• The above mentioned function can be used like as a base for other existing functions, for example: BroadcastJoinedDimension (I've refactored all of them to use BroadcastJoinedIf)
• The former 2 give a pretty good performance boost. Not tested, but it would make sense, especially on servers where there are a lot of packets sent / frame. (No heap allocs anymore, and sorts, so :D)
• Refactored the code to c++17 standards - Now its even more readable
• Added 2 todos!! Maybe even more!
• Added noexcept and const wherever possible
• Cleaned up old code related to the manager (eg.: Use GetAllPlayers() instead of IterBegin and IterEnd, and use IterateJoined where the old code used IterBegin and IterEnd and checked if the player is joined)
• Moved CSendList from CGame to its own file, because in the process of refactoring it ended up being quite big
• Added GetNetServerReliability and GetNetServerPriority to CPacket. These functions are wrappers and translator of GetFlags (They translate from our enum to raknet enums)

When reviewing

• See if the old codes logic matches the new one. Eg.: In commit bdbb722 see if I've missed a check we copy pasting code, or something. (I didnt)

@qaisjp Sorry for some fuckups in the commits, but coudn't properly select staged in vsc.
I've tried my best to make the commits atomic.

[Pirulax]

I added this check, because I presume it was unintentionally left out?

[Pirulax]

Me when i press Build: https://imgur.com/gallery/b4GHdOO

[Pirulax]

Requires some testing.
Would be nice if we could gather 10-20 players.
One issue that might occur is that any of the containers (m_Players, m_SocketPlayerMap, m_JoinedByBitStreamVer) gets modified while iterating thru them.
It's very unlikely tho.

[Pirulax]

Please help me out here.
Nvm oof, that didn't work the way I imagined it.

Stale

[patrikjuvonen]

Merge conflicts must be resolved.

[github-actions]

This draft pull request is stale because it has been open for at least 90 days with no activity. Please continue on your draft pull request or it will be closed in 30 days automatically.

[github-actions]

This draft pull request was closed because it has been marked stale for 30 days with no activity.