feat: upgrade to .NET 6, refactor everything

PluralKit.Core/Database/Utils/QueryPatchWrapper.cs

@@ -1,28 +1,24 @@
-using System;
-using System.Collections.Generic;
-
 using SqlKata;
 
-namespace PluralKit.Core
+namespace PluralKit.Core;
+
+internal class QueryPatchWrapper
 {
-    internal class QueryPatchWrapper
+    private readonly Dictionary<string, object> _dict = new();
+
+    public QueryPatchWrapper With<T>(string columnName, Partial<T> partialValue)
     {
-        private Dictionary<string, object> _dict = new();
+        if (partialValue.IsPresent)
+            _dict.Add(columnName, partialValue);
 
-        public QueryPatchWrapper With<T>(string columnName, Partial<T> partialValue)
-        {
-            if (partialValue.IsPresent)
-                _dict.Add(columnName, partialValue);
-
-            return this;
-        }
-
-        public Query ToQuery(Query q) => q.AsUpdate(_dict);
+        return this;
     }
 
-    internal static class SqlKataExtensions
-    {
-        internal static Query ApplyPatch(this Query query, Func<QueryPatchWrapper, QueryPatchWrapper> func)
-            => func(new QueryPatchWrapper()).ToQuery(query);
-    }
+    public Query ToQuery(Query q) => q.AsUpdate(_dict);
+}
+
+internal static class SqlKataExtensions
+{
+    internal static Query ApplyPatch(this Query query, Func<QueryPatchWrapper, QueryPatchWrapper> func)
+        => func(new QueryPatchWrapper()).ToQuery(query);
 }