Add all our telegram bots

According to the Telegram verification page, we can verify our telegram bots by adding "a link to the Telegram channel from the official website of the organization may also be taken into account. The bot will offer to submit additional data and comments after checking the social media links."

Right now we have these three bots:

• gettor_bot - gettor bot
• torprojectsupportbot - get in touch with the Tor support team
• getbridgesbot - get a bridge from bridgedb