Add special_tokens_map.json required by fastembed-rs tokenizer loader

special_tokens_map.json

@@ -0,0 +1,10 @@
+{
+    "pad_token": {
+        "content": "[PAD]",
+        "lstrip": true,
+        "normalized": true,
+        "rstrip": true,
+        "single_word": true
+    },
+    "unk_token": "[UNK]"
+}