Add new meta files and interfaces for project structure

Assets/Samples/A_ Pathfinding Project/5.3.8/Example scenes/Materials/Classic/SomeBox.mat

@@ -0,0 +1,56 @@
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+  m_ShaderKeywords: []
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+    m_Floats:
+      data:
+        first:
+          name: _Shininess
+        second: 1
+    m_Colors:
+      data:
+        first:
+          name: _Color
+        second: {r: 1, g: .800000012, b: .400000006, a: .968627453}
+      data:
+        first:
+          name: _SpecColor
+        second: {r: .5, g: .5, b: .5, a: 1}
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