feat[bert]: FastAPI interface

ml-service/app.py

@@ -1,6 +1,5 @@
 # app.py
-from fastapi import FastAPI, APIRouter
-import uvicorn
+from fastapi import FastAPI
 from classifier import Classifier
 import nlp
 import logging

ml-service/nlp.py

@@ -1,8 +1,4 @@
 # nlp.py
-from classifier import Classifier
-
-classifier = Classifier()
-
-def sentiment_analysis(self, text:str, classifier): 
+def sentiment_analysis(classifier, text): 
   sentiment = classifier.get_sentiment_label_and_score(text)
   return sentiment