Large refactor and project restructuring

PluralKit.Core/Utils/ConnectionUtils.cs

@@ -0,0 +1,28 @@
+using System.Collections.Generic;
+using System.Data;
+using System.Data.Common;
+
+using Dapper;
+
+namespace PluralKit.Core {
+    public static class ConnectionUtils
+    {
+        public static async IAsyncEnumerable<T> QueryStreamAsync<T>(this DbConnectionFactory connFactory, string sql, object param)
+        {
+            using var conn = await connFactory.Obtain();
+            
+            await using var reader = (DbDataReader) await conn.ExecuteReaderAsync(sql, param);
+            var parser = reader.GetRowParser<T>();
+            while (reader.Read())
+                yield return parser(reader); 
+        }
+        
+        public static async IAsyncEnumerable<T> QueryStreamAsync<T>(this IDbConnection conn, string sql, object param)
+        {
+            await using var reader = (DbDataReader) await conn.ExecuteReaderAsync(sql, param);
+            var parser = reader.GetRowParser<T>();
+            while (reader.Read())
+                yield return parser(reader); 
+        }
+    }
+}