[Software Project 2019/2020] Extending the support for cryptocurrencies in our blockchain-based decentralized exchange

[rahimklaber]

• Updated bitcoinlib to latest version
• Implemented Ethereum and Erc-20 tokens
• Implemented Stellar lumens
• Implemented Iota
• Implemented Monero
• Implemented Litecoin and Dash

related issue : https://github.com/Tribler/tribler/issues/5293

[tribler-ci]

Can one of the admins verify this patch?

[devos50]

ok to test