Add Vela codebase

 - Added modules ethosu.vela and ethosu.mlw_codec.
 - Added README and various configuration files.

Change-Id: I3690f8c8f5966306ecddaeb2793c30ca9c6e2eee
diff --git a/ethosu/vela/tflite/DepthToSpaceOptions.py b/ethosu/vela/tflite/DepthToSpaceOptions.py
new file mode 100644
index 0000000..97b93aa
--- /dev/null
+++ b/ethosu/vela/tflite/DepthToSpaceOptions.py
@@ -0,0 +1,30 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: tflite
+
+import flatbuffers
+
+class DepthToSpaceOptions(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAsDepthToSpaceOptions(cls, buf, offset):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = DepthToSpaceOptions()
+        x.Init(buf, n + offset)
+        return x
+
+    # DepthToSpaceOptions
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+    # DepthToSpaceOptions
+    def BlockSize(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int32Flags, o + self._tab.Pos)
+        return 0
+
+def DepthToSpaceOptionsStart(builder): builder.StartObject(1)
+def DepthToSpaceOptionsAddBlockSize(builder, blockSize): builder.PrependInt32Slot(0, blockSize, 0)
+def DepthToSpaceOptionsEnd(builder): return builder.EndObject()