- Mesh upload support

- LLMesh asset decoding and encoding (inc. LLPhysicsConvex, LLSkin, LLSubMesh)
- Query inventory folder by type
- onSelectedObject event
- fetchInventoryItem command
- Fix packing/unpacking of object shape
- Time sync with SimulatorViewerTimeMessage
- Changed several classes to a .from style rather than setting up in the constructor (exception friendly)
- Whole bunch of other improvements
- Object building

lib/classes/public/interfaces/LLSubMesh.ts

@@ -0,0 +1,21 @@
+import {Vector3} from '../../Vector3';
+import {Vector2} from '../../Vector2';
+
+export interface LLSubMesh
+{
+    noGeometry?: true,
+    position?: Vector3[],
+    positionDomain?: {
+        min: Vector3,
+        max: Vector3
+    },
+    normal?: Vector3[],
+    texCoord0?: Vector2[],
+    texCoord0Domain?: {
+        min: Vector2,
+        max: Vector2
+    }
+    triangleList?: number[],
+    weights?: {[key: number]: number}[],
+
+}