The new widows terminal app supports ssh profiles as "commandline" profiles, it store the config in a json file

here a snippet example:
{
"guid": "{5385f66f-1046-4404-96a4-c49d824407a5}",
"name": "Termius Example",
"icon": "C:\SomePath\SomeFile.png",
"commandline": "ssh termius@example -i C:\PathTo\sshprivatekey"
}