- Added waifu price decay functionality

- Waifu prices changed to long, supporting much higher prices than before
- Fixed .yml comment indentation in some cases
- Updated changelog

src/NadekoBot/Db/Extensions/WaifuExtensions.cs

@@ -9,7 +9,7 @@ namespace NadekoBot.Db;
 public class WaifuInfoStats
 {
     public string FullName { get; init; }
-    public int Price { get; init; }
+    public long Price { get; init; }
     public string ClaimerName { get; init; }
     public string AffinityName { get; init; }
     public int AffinityCount { get; init; }

src/NadekoBot/Db/Models/Waifu.cs

@@ -14,7 +14,7 @@ public class WaifuInfo : DbEntity
     public int? AffinityId { get; set; }
     public DiscordUser Affinity { get; set; }
 
-    public int Price { get; set; }
+    public long Price { get; set; }
     public List<WaifuItem> Items { get; set; } = new();
 
     public override string ToString()
@@ -49,7 +49,7 @@ public class WaifuLbResult
     public string Affinity { get; set; }
     public string AffinityDiscrim { get; set; }
 
-    public int Price { get; set; }
+    public long Price { get; set; }
 
     public override string ToString()
     {