input: Write a python function to fetch tweets with a specific hashtag and store them in a SQLite database.
  assert fetch_and_store_tweets('#python') == True
  assert fetch_and_store_tweets('#javascript') == True
output: import sqlite3
  import tweepy
  
  def fetch_and_store_tweets(hashtag):
      # Twitter API credentials
      consumer_key = 'your_consumer_key'
      consumer_secret = 'your_consumer_secret'
      access_token = 'your_access_token'
      access_token_secret = 'your_access_token_secret'
  
      # Set up tweepy authorization
      auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
      auth.set_access_token(access_token, access_token_secret)
      api = tweepy.API(auth)
  
      # Fetch tweets with the specific hashtag
      tweets = api.search(q=hashtag, count=100)
  
      # Connect to SQLite database
      conn = sqlite3.connect('tweets.db')
      cursor = conn.cursor()
  
      # Create tweets table if it doesn't exist
      cursor.execute('''
      CREATE TABLE IF NOT EXISTS tweets (
          id INTEGER PRIMARY KEY,
          tweet_id TEXT,
          text TEXT,
          user TEXT,
          created_at TEXT
      )
      ''')
  
      # Insert tweets into the database
      for tweet in tweets:
          cursor.execute('''
          INSERT INTO tweets (tweet_id, text, user, created_at)
          VALUES (?, ?, ?, ?)
          ''', (tweet.id_str, tweet.text, tweet.user.screen_name, tweet.created_at))
  
      # Commit and close the connection
      conn.commit()
      conn.close()
  
      return True