PouchDB database locations should be configurable or default to somewhere guaranteed to be writable.

[nick-verida]

In a number of scenarios including deployment via AWS Amplify Next.js support the default location for PouchDB database (which I think is whatever the current directory is) isn't writable. It would also be useful for testing, so the databases don't litter the current directory.

It should either be configurable (at least via an environment variable) or default to TMPDIR on Linux and MacOS and TEMP on Windows.

See

verida-js/packages/client-ts/src/context/engines/verida/database/db-encrypted.ts

Line 59 in 0927f3c

this._localDbEncrypted = new PouchDB(this.databaseHash);

pouchdb/pouchdb#214

https://pouchdb.com/api.html#create_database