Add mapping editor (#23427)

* Add mapping editor (#757)

* Remove mapping actions, never again

* Cleanup actions system

* Jarvis, remove all references to CM14

* Fix InventoryUIController crashing when an InventoryGui is not found

* Rename mapping1 to mapping

* Clean up context calls

* Add doc comments

* Add delegate for hiding decals in the mapping screen

* Jarvis mission failed

* a

* Add test

* Fix not flushing save stream in mapping manager

* change

* Fix verbs

* fixes

* localise

---------

Co-authored-by: DrSmugleaf <DrSmugleaf@users.noreply.github.com>
Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>
Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>
Co-authored-by: Pieter-Jan Briers <pieterjan.briers+git@gmail.com>

Content.Shared/Mapping/MappingMapDataMessage.cs

@@ -0,0 +1,46 @@
+using System.IO;
+using Lidgren.Network;
+using Robust.Shared.Network;
+using Robust.Shared.Serialization;
+using Robust.Shared.Utility;
+
+namespace Content.Shared.Mapping;
+
+public sealed class MappingMapDataMessage : NetMessage
+{
+    public override MsgGroups MsgGroup => MsgGroups.Command;
+    public override NetDeliveryMethod DeliveryMethod => NetDeliveryMethod.ReliableUnordered;
+
+    public ZStdCompressionContext Context = default!;
+    public string Yml = default!;
+
+    public override void ReadFromBuffer(NetIncomingMessage buffer, IRobustSerializer serializer)
+    {
+        MsgSize = buffer.LengthBytes;
+
+        var uncompressedLength = buffer.ReadVariableInt32();
+        var compressedLength = buffer.ReadVariableInt32();
+        var stream = new MemoryStream(compressedLength);
+        buffer.ReadAlignedMemory(stream, compressedLength);
+        using var decompress = new ZStdDecompressStream(stream);
+        using var decompressed = new MemoryStream(uncompressedLength);
+
+        decompress.CopyTo(decompressed, uncompressedLength);
+        decompressed.Position = 0;
+        serializer.DeserializeDirect(decompressed, out Yml);
+    }
+
+    public override void WriteToBuffer(NetOutgoingMessage buffer, IRobustSerializer serializer)
+    {
+        var stream = new MemoryStream();
+        serializer.SerializeDirect(stream, Yml);
+        buffer.WriteVariableInt32((int) stream.Length);
+
+        stream.Position = 0;
+        var buf = new byte[ZStd.CompressBound((int) stream.Length)];
+        var length = Context.Compress2(buf, stream.AsSpan());
+
+        buffer.WriteVariableInt32(length);
+        buffer.Write(buf.AsSpan(0, length));
+    }
+}