chore(*): Move all C# solutions into a C# folder to make it clearer which languages are used

.gitignore

@@ -4,3 +4,4 @@ obj/
 .DS_Store
 .idea/
 AdventOfCode/AdventOfCode.sln.DotSettings.user
+node_modules/

AdventOfCode C#/AdventOfCode.sln.DotSettings.user

@@ -0,0 +1,6 @@
+<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
+	
+	
+	<s:String x:Key="/Default/Environment/UnitTesting/UnitTestSessionStore/Sessions/=8ddce0d5_002Db323_002D41bb_002Da920_002D6cc320742199/@EntryIndexedValue">&lt;SessionState ContinuousTestingMode="0" IsActive="True" Name="All tests from Y2024" xmlns="urn:schemas-jetbrains-com:jetbrains-ut-session"&gt;
+  &lt;ProjectFolder&gt;2E0193E1-5DD3-40A6-A07B-C6E58341ACA0/d:Y2024&lt;/ProjectFolder&gt;
+&lt;/SessionState&gt;</s:String></wpf:ResourceDictionary>