Use speech marks to escape strings

This allows column names to be escaped.

Author: Joy-less

SQLiteSharp/Globals.cs

@@ -12,13 +12,13 @@ namespace SQLiteSharp;
 public static class Globals {
     /// <summary>
     /// Convert an input string to a quoted SQL string that can be safely used in queries.<br/>
-    /// For example, <c>red 'blue' green</c> becomes <c>'red ''blue'' green'</c>.
+    /// For example, <c>red "blue" green</c> becomes <c>"red ""blue"" green"</c>.
     /// </summary>
     public static string Quote(string? unsafeString) {
         if (unsafeString is null) {
             return "null";
         }
-        return $"'{unsafeString.Replace("'", "''")}'";
+        return $"\"{unsafeString.Replace("\"", "\"\"")}\"";
     }
     public static Expression? AndAlso(Expression? left, Expression? right) {
         if (left is not null && right is not null) {