Added mimatic_usd

With addition of mimatic_usd, Nodary now has 121 crypto data feeds.

mimatic_usd beacon

Name	Beacon ID	Sponsor wallet address
mimatic_usd	0x5f7d547603a49ceb558136216059b7a14d58951eda5646fe48c11864d03f8bf9	0xA3a543Be6D3Fdb4d5e0c9193872f22c3578B0223