merge tide-compress's mime db stuff into the Content-Type typed header

basically, this but with the other fields that the json database provides: https://github.com/Fishrock123/tide-compress/blob/main/build.rs

see https://github.com/jshttp/mime-db/blob/master/db.json

Start by comparing tide-compress's build.rs with the jshttp/mime-db db.json referenced in the issue, then inspect the Content-Type typed header in http-types. Done means the header incorporates the additional fields provided by the MIME database, with the resulting behavior verified against the project's existing checks.

Written by the indexing model from the issue text.