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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Probably easier to use the SSH & Web addon since Terminal was depreciated. It should also be in the Supervisor tab where you found Terminal. It's the replacement for Terminal and does the same things.
I'm looking though the Terminal documentation but I can't find any mention of raw config, unless you're referring to the config code box under: Example add-on configuration in the documentation. If you are, I'm guessing this addon was aimed at people who already had access to HA's config folder and could create this file by other means. Probably why it was depreciated.
Once again, who knows better how to install it other than the guys who made it? No one , luckily for you, even being an Hacs integration (so not necessarily polished) the documentation seems very well written