Add RTF

[Craftefix]

Cobsider adding https://runtheframes.xyz/ to the list

[zotabee]

Well provide the stats then!

[Craftefix]

welp, seems like they are down

[zotabee]

When it's back, copy a random line of https://github.com/HDVinnie/Private-Trackers-Spreadsheet/blob/master/trackers.json
edit all the fields to match RTF and paste it here so I can create a PR easily. Thanks.