Clear unused asset, and make a basic addon

Fange Pipeline/Pipline.py

@@ -0,0 +1,16 @@
+"""
+Pipeline to export Placeholder inside Unity
+
+About building setup:
+    - Get each placeholder collection, and export it has unique mesh with the `SM_` prefix
+    
+"""
+
+import bpy
+
+coll = 'Placeholder'
+
+for collection in bpy.data.collections:
+    print(f'[Pipeline] Collection "{collection.name}"')
+    if collection.name is 'coll':
+        print(f'[Pipeline] Collection placeholder found')