feat: Add scheduler again

Since I have fixed the issue with the `SIGTINT` hanging the application
I can readd the scheduler once more.

Also move the param for amount of scheduler work.

fix: Wrap media scan into a go routine

For some unknown reason `ReadExif` hangs when the context is canceled
through signal handling. Perhaps perl-exif tooling is closing on
`SIGNINT`.

feat: Remove unecessary param from repo

ref: Remove scratchpad notes

feat: Move params to flags

Start using flags to set some params like key and database connection.
As a flag parse I opt for a lib that uses posix style params.

chore: Add deps

fix: Fix having to login every server reload

fix: Fix linter issues

feat: Inicial commit

It contains rough template for the server and runners.

It contains rough template for the server and runners.