Remove Gift and Coupon from Steam EType

It doesn't make any sense when we're always asking for community items, no need for extra confusion, and code is also shorter.
This IS another breaking change for past configs, so if you're using pre-release you should adapt your configs. But if you're using pre-release, I guess you know that such things happen.

ArchiSteamFarm/ArchiWebHandler.cs

@@ -1002,10 +1002,6 @@ namespace ArchiSteamFarm {
 			switch (name) {
 				case "Booster Pack":
 					return Steam.Item.EType.BoosterPack;
-				case "Coupon":
-					return Steam.Item.EType.Coupon;
-				case "Gift":
-					return Steam.Item.EType.Gift;
 				case "Steam Gems":
 					return Steam.Item.EType.SteamGems;
 				default:

ArchiSteamFarm/CardsFarmer.cs

@@ -46,7 +46,7 @@ namespace ArchiSteamFarm {
 
 		[JsonProperty]
 		internal TimeSpan TimeRemaining => new TimeSpan(
-			Bot.BotConfig.CardDropsRestricted ? (int) Math.Ceiling(GamesToFarm.Count / (float) ArchiHandler.MaxGamesPlayedConcurrently * HoursToBump) : 0,
+			Bot.BotConfig.CardDropsRestricted ? (int) (Math.Ceiling(GamesToFarm.Count / (float) ArchiHandler.MaxGamesPlayedConcurrently * HoursToBump) - GamesToFarm.Min(game => game.HoursPlayed)) : 0,
 			30 * GamesToFarm.Sum(game => game.CardsRemaining),
 			0
 		);

ArchiSteamFarm/JSON/Steam.cs

@@ -360,9 +360,7 @@ namespace ArchiSteamFarm.JSON {
 			internal enum EType : byte {
 				Unknown,
 				BoosterPack,
-				Coupon,
 				Emoticon,
-				Gift,
 				FoilTradingCard,
 				ProfileBackground,
 				TradingCard,

ArchiSteamFarm/config/example.json

@@ -13,8 +13,8 @@
   "IsBotAccount": false,
   "LootableTypes": [
     1,
-    5,
+    3,
-    7
+    5
   ],
   "PasswordFormat": 0,
   "Paused": false,

ConfigGenerator/JSON/Steam.cs

@@ -31,9 +31,7 @@ namespace ConfigGenerator.JSON {
 			internal enum EType : byte {
 				Unknown,
 				BoosterPack,
-				Coupon,
 				Emoticon,
-				Gift,
 				FoilTradingCard,
 				ProfileBackground,
 				TradingCard,