Add TFLite specific template for select/missing ops.

PiperOrigin-RevId: 222891735

.github/ISSUE_TEMPLATE/40-tflite-op-request.md

@@ -0,0 +1,24 @@
+---
+name: TensorFlow Lite Op Request
+about: Use this template for reporting ops you are using or missing.
+
+---
+
+
+**System information**
+- OS Platform and Distribution (e.g., Linux Ubuntu 16.04):
+- TensorFlow installed from (source or binary):
+- TensorFlow version (or github SHA if from source):
+
+
+**Provide the text output from tflite_convert**
+
+```
+# Copy and paste here
+```
+
+Also, please include a link to a GraphDef or the model if possible.
+
+**Any other info / logs**
+
+Include any logs or source code that would be helpful to diagnose the problem. If including tracebacks, please include the full traceback. Large logs and files should be attached.