Adding further RandomX coins to the pool and possible merge mining

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Soon to come to mainnet, Townforge which can be merged with Monero would be one example which should be at the top of the list. At the moment we only have two RX/0 coins to choose from but if they are performing badly there is no other randomX coin we could mine, It would beneficial to miners who are setup to mine random X coins to have other coins to mine from as an options