feat: non-generic FNV1a hasher added

Engine.Systems/Network/Hasher.cs

@@ -0,0 +1,21 @@
+namespace Engine.Systems.Network;
+
+public static class Hasher
+{
+    public static long FNV1a(string name)
+    {
+        const long fnvPrime = 1099511628211;
+        long result = 1469598103934665603;
+
+        unchecked
+        {
+            foreach (char c in name)
+            {
+                result ^= c;
+                result *= fnvPrime;
+            }
+        }
+
+        return result;
+    }
+}