Bump <LangVersion/> to 14

Author: YoshiRulz

Common.props

@@ -17,7 +17,7 @@
 		<Features>strict</Features>
 		<GenerateDocumentationFile>true</GenerateDocumentationFile> <!-- it would be nice to rename these to *.api_reference.xml or something, but it seems https://github.com/dotnet/standard/issues/614 was never fixed -->
 		<IsTargetingNetFramework>$(TargetFramework.StartsWith("net4"))</IsTargetingNetFramework> <!-- $(TargetFrameworkIdentifier) is unset here -->
-		<LangVersion>12.0</LangVersion>
+		<LangVersion>14.0</LangVersion>
 		<ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
 		<NoWarn>$(NoWarn);CS1591</NoWarn> <!-- CS1591 wants doc comments on every type/member, which is a recipe for useless generated or blank comments -->
 		<Nullable>enable</Nullable>

src/BizHawk.Emulation.Cores/Consoles/PC Engine/QuickCollections.cs

@@ -53,7 +53,7 @@ public QuickQueue(int capacity)
 		public void Enqueue(T item)
 		{
 			if (size >= buffer.Length)
-				throw new Exception($"{nameof(QuickQueue<T>)} capacity breached!");
+				throw new Exception($"{nameof(QuickQueue<>)} capacity breached!");
 
 			buffer[tail] = item;
 			tail = (tail + 1) % buffer.Length;
@@ -78,7 +78,7 @@ public T[] ToArray(int elemSize)
 		public T Dequeue()
 		{
 			if (size == 0)
-				throw new Exception($"{nameof(QuickQueue<T>)} is empty!");
+				throw new Exception($"{nameof(QuickQueue<>)} is empty!");
 
 			T item = buffer[head];
 			head = (head + 1) % buffer.Length;