Feature request: integration with systemd to autostart on login

While the general ask is to support starting on login, this is a specific implementation request for systemd.

I ended up creating my own 1password.service unit file for systemd in the usual discovery location used by some other apps like docker-desktop i.e., /usr/lib/systemd/user/1password.service with the content:

```
[Unit]
Description=1Password
Requires=graphical-session.target
After=graphical-session.target

[Service]
ExecStart=/opt/1Password/1password --silent
Type=exec
TimeoutSec=60

[Install]
Alias=1password.service
WantedBy=graphical-session.target
```

A user - or even 1Password via the config dialog - can then run systemctl --user enable 1password to have it automatically start with a graphical session is started.

Your .deb file could install this along with other files.

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1Password Version: 8.10.27
Extension Version: 2.21.0
OS Version: Ubuntu 22.04
Browser: Firefox