Add has method

[agent00jackson]

I needed this to search for common stock.

Sample Query:

query = (Query()
             .select('name', 'market', 'sector', 'industry', 'indexes.tr', 'isin', 'country')
             .where(Column('type') ==  'stock',
                    Column('typespecs').has(['common']),
                    Column('country') == 'United States',
                    Column('exchange').isin(['NASDAQ', 'NYSE'])))

[shner-elmo]

Hey Jackson, thanks for the PR.
I actually already implemented that method in the staging branch, along with a few others, that I want to merge this week.

In the meantime, you can replace the expression inside the where function with the dictionary returned by the method to make it work.

[shner-elmo]

If you want, add the remaining methods that I added to the Query object, to the PR, and I will merge it

[shner-elmo]

I added this method in the latest version of the package.
https://shner-elmo.github.io/TradingView-Screener/tradingview_screener/query.html#Column.has