Update with backwards compatible tokenizer format

parakeet-tdt_ctc-110m/config.json

@@ -0,0 +1,7 @@
+{
+  "bos_token_id": 1,
+  "eos_token_id": 2,
+  "nemo_model_type": "parakeet",
+  "pad_token_id": 0,
+  "vocab_size": 1024,
+}

parakeet-tdt_ctc-110m/tokenizer_config.json

@@ -22,6 +22,6 @@
   "model_max_length": 1000000000000000019884624838656,
   "pad_token": "<pad>",
   "processor_class": "ParakeetProcessor",
-  "tokenizer_class": "ParakeetTokenizerFast",
+  "tokenizer_class": "PreTrainedTokenizer",
   "unk_token": "<unk>"
 }