Add a special tokenizer for CPM model
Added a special tokenizer (pre-tokenization) for CPM model: https://huggingface.co/TsinghuaAI/CPM-Generate
The CI error looks irrelevant<|||||>Sure! Thanks for the guidance.<|||||>@LysandreJik ping😅<|||||>Done @LysandreJik <|||||>> Great, thanks a lot for adding this! Could you also add the model to the main README since it has a doc page? After doing so run `make fix-copies` so the table in the index is also updated.

Hi @sgugger I'm not sure about this! We only have a tokenizer (no modeling file) here so maybe it shouldn't be in the README (from my understanding)?<|||||>The README contains BARThez that also only adds a tokenizer so there is a precedent. BORT is also there and only adds a conversion script, re-using other models and tokenizers from the lib.<|||||>> The README contains BARThez that also only adds a tokenizer so there is a precedent. BORT is also there and only adds a conversion script, re-using other models and tokenizers from the lib.

Makes sense! I'll do it tmrw!<|||||>Done<|||||>@LysandreJik Mind taking a look at the CI? Dunno what's wrong there.<|||||>Don't worry about it, it's unrelated to your PR. It's an issue with Megatron BERT, we temporarily removed that model from the CI on `master`