Make sure Deno KV works

[kaBeech]

A simple first step would be running the populateDB script and then running the getAllStars() function from db.ts to make sure there's stuff there

[kaBeech]

Seems like this works!

If a star already exists in KV and populateDB.ts tries to upsert it, an error is thrown: Uncaught (in promise) Error: database is locked: Error code 5: The database file is locked

But running it the first time worked, and running checkDB.ts gives the expected result!

[kaBeech]

Still to do:

• See if we can get upsert to work when the star being upserted already exists in KV
• Verify that updating a star's commonName works

[kaBeech]

Done!