Add Avalian Trader Town NPC, add Infinite Mana accessory for testing, add two new magic weapons

Content/Items/Weapons/Magic/ShatteredPrism.cs

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+using ForgottenWawiTech.Content.Projectiles;
+using Microsoft.Xna.Framework;
+using Terraria;
+using Terraria.ID;
+using Terraria.ModLoader;
+
+namespace ForgottenWawiTech.Content.Items.Weapons.Magic
+{
+	public class ShatteredPrism : ModItem
+	{
+		public override string Texture => "Terraria/Images/Item_" + ItemID.LastPrism; // TODO: Change
+		public static Color OverrideColor = new(80,0,80);
+
+		public override void SetDefaults() {
+			Item.CloneDefaults(ItemID.LastPrism);
+			Item.mana = 4;
+			Item.damage = 2000;
+			Item.shoot = ModContent.ProjectileType<ShatteredPrismHoldout>();
+			Item.shootSpeed = 30f;
+
+			// Change the item's draw color so that it is visually distinct from the vanilla Last Prism.
+			Item.color = OverrideColor;
+		}
+
+
+
+		// Because this weapon fires a holdout projectile, it needs to block usage if its projectile already exists.
+		public override bool CanUseItem(Player player) {
+			return player.ownedProjectileCounts[ModContent.ProjectileType<ShatteredPrismHoldout>()] <= 0;
+		}
+	}
+}