Fix google trends. Error: The request failed: Google returned a response with code 429.

[montezdesousa]

This PR fix the error showing on integration tests "Error: The request failed: Google returned a response with code 429." -> too many requests : mentioned on #2612

The PR also fixes an issue with ba controller, where mentions was prompting:

Instead of:

When user tries to run mentions without any ticker loaded.

The 429 error might occur with commands: mentions, regions, queries and rise.

Integration tests: python terminal.py scripts\test_stocks_ba.openbb

api

from openbb_terminal.api import openbb

openbb.stocks.ba.mentions(symbol="AAPL")
openbb.stocks.ba.regions(symbol="AAPL")
openbb.stocks.ba.queries(symbol="AAPL")
openbb.stocks.ba.rise(symbol="AAPL")

Might me useful to overload TrendReq to get the desired error with:

for i in range(10000):
       openbb.stocks.ba.mentions(symbol="AAPL")

[hjoaquim]

Nothing to add imo.
Test pass now: