added database file to gitignore

Signed-off-by: arghdos <arghdos@users.noreply.github.com>
Big upgrade for sql database
-- Added ability to create tables
-- Added autocommit and close (using a with: statement)
-- Added ability to add/check/query channels
-- Added ability to add reddit

TODO:
--check/query reddit
--delete (any)

Signed-off-by: arghdos <arghdos@users.noreply.github.com>
added database tests

Signed-off-by: arghdos <arghdos@users.noreply.github.com>
added resolve_url method

Signed-off-by: arghdos <arghdos@users.noreply.github.com>