[Feature] Flexible file location for database

[seducingbits]

For easier Docker support it would be great when the location of the database could be configured.

Right now the database is located alongside the main location of the app. This makes it harder to seperate data from app. This isn't wanted for containers, see here

Application containers should not store application data. This way you can replace app container with its newer version at any time by executing something like this.

Or is it possible to mount just the database file to the position stash wants it? I tried and wasn't able to do so. But I am also not a Docker expert 🙄

[StashAppDev]

I have started laying the groundwork for this with this commit 255ec48 . I just need to modify the configuration endpoint to accept a new database path and expose that in the settings UI.