Extensive work on building, wearables, assets, inventory, attachments, serialization, etc.

Resolves #36

lib/classes/commands/InventoryCommands.ts

@@ -9,6 +9,7 @@ import { UUID } from '../UUID';
 import { Vector3 } from '../Vector3';
 import { PacketFlags } from '../../enums/PacketFlags';
 import { ChatSourceType } from '../../enums/ChatSourceType';
+import { InventoryItem } from '../InventoryItem';
 
 export class InventoryCommands extends CommandsBase
 {
@@ -54,6 +55,23 @@ export class InventoryCommands extends CommandsBase
         return await this.circuit.waitForAck(sequenceNo, 10000);
     }
 
+    async getInventoryItem(item: UUID | string): Promise<InventoryItem>
+    {
+        if (typeof item === 'string')
+        {
+            item = new UUID(item);
+        }
+        const result = await this.currentRegion.agent.inventory.fetchInventoryItem(item);
+        if (result === null)
+        {
+            throw new Error('Unable to get inventory item');
+        }
+        else
+        {
+            return result;
+        }
+    }
+
     async acceptInventoryOffer(event: InventoryOfferedEvent): Promise<void>
     {
         if (event.source === ChatSourceType.Object)